Data sources

An overview of the historical data used for training models, and the recent data used for scoring current contests.
Media content
For tracking the volume and sentiment of media coverage about candidates
Aylien
Description
Online news articles from local, regional, and national sources with related metadata on the source, author(s), related articles, relevant entities, keywords, and sentiment
Data Range
2010 to present
Scope
283 million articles from 292,000 outlets
Update Interval
Hourly
Critical Mention
Description
Transcripts, audio, and video for local and national television and radio stations, as well as associated metadata related to viewership, advertisement cost, and sentiment
Data Range
2015 to present
Scope
2 billion minutes of content from 2,300 channels
Update Interval
Hourly
Google Custom Search API
Description
Search result counts and result summaries matching specific queries
Data Range
2011 to present
Scope
1.8 million daily result counts
Update Interval
Daily
Campaign finance
For tracking candidate fundraising totals, fundraising trends over time, and demographics of contributors
Open Secrets
Description
Itemized contributions for candidate campaigns, political action committees, and ballot measure committees at the state, local, and federal levels
Data Range
2010 to present
Scope
56 million itemized contributions
Update Interval
Weekly
Alaska Secretary of State
Description
Itemized contributions and reports for Alaska campaign committees
Data Range
2018 to present
Scope
437,000 contribution records
Update Interval
Weekly
Cal-Access
Description
Itemized contributions and reports for California campaign committees
Data Range
1996 to present
Scope
11 million contribution records
Update Interval
Weekly
City of Albuquerque, NM
Description
Itemized contributions and reports for local campaign committees in Albuquerque, NM
Data Range
Current only
Scope
14,000 contribution records
Update Interval
Weekly
City of Detroit, MI
Description
Itemized contributions and reports for local campaign committees in Detroit, MI
Data Range
Current only
Scope
17,000 contribution records
Update Interval
Weekly
City of Miami, FL
Description
Itemized contributions and reports for local campaign committees in Miami, FL
Data Range
Current only
Scope
11,000 contribution records
Update Interval
Weekly
City of New York, NY
Description
Itemized contributions and reports for local campaign committees in New York City
Data Range
Current only
Scope
511,000 contribution records
Update Interval
Weekly
Colorado Secretary of State
Description
Itemized contributions and reports for CO campaign committees
Data Range
2020 to present
Scope
906,000 contribution records
Update Interval
Weekly
Delaware Secretary of State
Description
Itemized contributions and reports for California campaign committees
Data Range
2008 to present
Scope
166,000 contribution records
Update Interval
Weekly
Florida Department of State
Description
Itemized contributions and reports for Florida campaign committees
Data Range
2020 to present
Scope
909,000 contribution records
Update Interval
Weekly
Illinois Secretary of State
Description
Itemized contributions and reports for Illinois campaign committees
Data Range
2008 to present
Scope
4.3 million contribution records
Update Interval
Weekly
Indiana Secretary of State
Description
Itemized contributions and reports for Indiana campaign committees
Data Range
2020 to present
Scope
1.5 million contribution records
Update Interval
Weekly
Kentucky Registry of Election Finance
Description
Itemized contributions and reports for Kentucky campaign committees
Data Range
2020 to present
Scope
359,000 contribution records
Update Interval
Weekly
Louisiana Board of Elections
Description
Itemized contributions and reports for Louisiana campaign committees
Data Range
2020 to present
Scope
133,000 contribution records
Update Interval
Weekly
Massachusetts Office of Campaign & Political Finance
Description
Itemized contributions and reports for Massachusetts campaign committees
Data Range
2018 to present
Scope
748,000 contribution records
Update Interval
Weekly
Maryland Secretary of State
Description
Itemized contributions and reports for Maryland campaign committees
Data Range
2014 to present
Scope
478,000 contribution records
Update Interval
Weekly
Michigan Secretary of State
Description
Itemized contributions and reports for Michigan campaign committees
Data Range
2008 to present
Scope
15 million contribution records
Update Interval
Weekly
Missouri Ethics Commission
Description
Itemized contributions and reports for Missouri campaign committees
Data Range
2018 to present
Scope
136,000 contribution records
Update Interval
Weekly
North Carolina State Board of Elections
Description
Itemized contributions and reports for North Carolina campaign committees
Data Range
2018 to present
Scope
1 million contribution records
Update Interval
Weekly
New Jersey Election Law Enforcement Commission
Description
Itemized contributions and reports for New Jersey campaign committees
Data Range
2020 to present
Scope
180,000 contribution records
Update Interval
Weekly
New Hampshire Secretary of State
Description
Itemized contributions and reports for New Hampshire campaign committees
Data Range
2014 to present
Scope
67,000 contribution records
Update Interval
Weekly
New York Secretary of State
Description
Itemized contributions and reports for New York campaign committees
Data Range
1999 to present
Scope
14.8 million contribution records
Update Interval
Weekly
Oklahoma Ethics Commission
Description
Itemized contributions and reports for Oklahoma campaign committees
Data Range
Current only
Scope
167,000 contribution records 
Update Interval
Weekly
Oregon Secretary of State
Description
Itemized contributions and reports for Oregon campaign committees
Data Range
2020 to present
Scope
223,000 contribution records 
Update Interval
Weekly
Pennsylvania Secretary of State
Description
Itemized contributions and reports for Pennsylvania campaign committees
Data Range
2000 to present
Scope
53.8 million contribution records 
Update Interval
Weekly
Texas Ethics Commission
Description
Itemized contributions and reports for Texas campaign committees
Data Range
2000 to present
Scope
6.4 million contribution records 
Update Interval
Weekly
Virginia Department of Elections
Description
Itemized contributions and reports for Virginia campaign committees
Data Range
2020 to present
Scope
194,000 contribution records 
Update Interval
Weekly
Washington Open Data
Description
Itemized contributions, reports, and independent expenditures for state, local, and federal Washington-based campaign committees
Data Range
2008 to present
Scope
2.2 million contribution and expenditure records
Update Interval
Weekly
Election results
The main "source of truth" for how historical campaign activity translates to the actual outcome of an election
Open Elections
Description
Precinct-level, candidate-specific election results scraped for selected primary and general elections in selected states (assembled opportunistically by open source volunteers)
Data Range
2000 to 2018
Scope
13.4 million precinct-level results
Update Interval
Archive only
Statewide Database
Description
Block-level, candidate-specific election results in California for all state and federal non-special primary and general elections
Data Range
2012 to 2020
Scope
54.4 million block-level results
Update Interval
Biannual
MIT Elections Lab
Description
Precinct-level, candidate-specific election results
Data Range
2012 to 2020
Scope
34.2 million precinct-level results
Update Interval
Monthly
Voting and Election Science Team
Description
Precinct-level, candidate-specific election results
Data Range
2012 to 2020
Scope
9.6 million precinct-level results
Update Interval
Monthly 
Washington Secretary of State
Description
Precinct-level, candidate-specific election results in Washington
Data Range
2012 to 2020
Scope
35.3 million precinct-level results
Update Interval
Quarterly
Voter traits
Potential voters are scored using our trained models and the traits from these sources
TargetSmart VoterBase
Description
Voter file data, consumer data, and modeled traits for the U.S. adult population
Data Range
Current only
Scope
260 million records 
Update Interval
Monthly 
U.S. Census American Community Survey
Description
Annual population trait records at the Census Tract level, used to model population changes over time and estimate the traits of historic voters
Data Range
2010 to 2021
Scope
4.6 million records 
Update Interval
Annually 
Candidate traits
For helping to interpret the results of past elections, and applying models to current elections
Open Secrets
Description
Candidate and committee details for state and federal campaigns
Data Range
2010 to present 
Scope
152,000 unique campaign committees
Update Interval
Weekly
Reflective Democracy Project
Description
Demographics (e.g., race, age, and sex) for federal, state, and local candidates (collected through voter file matches and manual labeling)
Data Range
2012 to 2020
Scope
83,875 federal, state, and local candidate records
Update Interval
Annual
Ballotpedia
Description
Candidate details for federal, state, and local campaigns
Data Range
2018 to present
Scope
115,000 federal, state, and local candidate records
Update Interval
Weekly
BallotReady
Description
Candidate details for federal, state, and local campaigns
Data Range
2022 to present
Scope
136,000 federal, state, and local candidate records
Update Interval
Weekly

How we created Hubble Voter

Additional help

Last modified 3mo ago

Description	Online news articles from local, regional, and national sources with related metadata on the source, author(s), related articles, relevant entities, keywords, and sentiment
Data Range	2010 to present
Scope	283 million articles from 292,000 outlets
Update Interval	Hourly

Description	Transcripts, audio, and video for local and national television and radio stations, as well as associated metadata related to viewership, advertisement cost, and sentiment
Data Range	2015 to present
Scope	2 billion minutes of content from 2,300 channels
Update Interval	Hourly

Description	Search result counts and result summaries matching specific queries
Data Range	2011 to present
Scope	1.8 million daily result counts
Update Interval	Daily

Description	Itemized contributions for candidate campaigns, political action committees, and ballot measure committees at the state, local, and federal levels
Data Range	2010 to present
Scope	56 million itemized contributions
Update Interval	Weekly

Description	Itemized contributions and reports for Alaska campaign committees
Data Range	2018 to present
Scope	437,000 contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for California campaign committees
Data Range	1996 to present
Scope	11 million contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for local campaign committees in Albuquerque, NM
Data Range	Current only
Scope	14,000 contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for Florida campaign committees
Data Range	2020 to present
Scope	909,000 contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for Illinois campaign committees
Data Range	2008 to present
Scope	4.3 million contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for Kentucky campaign committees
Data Range	2020 to present
Scope	359,000 contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for Massachusetts campaign committees
Data Range	2018 to present
Scope	748,000 contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for North Carolina campaign committees
Data Range	2018 to present
Scope	1 million contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for Oklahoma campaign committees
Data Range	Current only
Scope	167,000 contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for Pennsylvania campaign committees
Data Range	2000 to present
Scope	53.8 million contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for Texas campaign committees
Data Range	2000 to present
Scope	6.4 million contribution records
Update Interval	Weekly

Description	Itemized contributions and reports for Virginia campaign committees
Data Range	2020 to present
Scope	194,000 contribution records
Update Interval	Weekly

Description	Itemized contributions, reports, and independent expenditures for state, local, and federal Washington-based campaign committees
Data Range	2008 to present
Scope	2.2 million contribution and expenditure records
Update Interval	Weekly

Description	Precinct-level, candidate-specific election results scraped for selected primary and general elections in selected states (assembled opportunistically by open source volunteers)
Data Range	2000 to 2018
Scope	13.4 million precinct-level results
Update Interval	Archive only

Description	Block-level, candidate-specific election results in California for all state and federal non-special primary and general elections
Data Range	2012 to 2020
Scope	54.4 million block-level results
Update Interval	Biannual

Description	Voter file data, consumer data, and modeled traits for the U.S. adult population
Data Range	Current only
Scope	260 million records
Update Interval	Monthly

Description	Annual population trait records at the Census Tract level, used to model population changes over time and estimate the traits of historic voters
Data Range	2010 to 2021
Scope	4.6 million records
Update Interval	Annually

Description	Candidate and committee details for state and federal campaigns
Data Range	2010 to present
Scope	152,000 unique campaign committees
Update Interval	Weekly

Description	Demographics (e.g., race, age, and sex) for federal, state, and local candidates (collected through voter file matches and manual labeling)
Data Range	2012 to 2020
Scope	83,875 federal, state, and local candidate records
Update Interval	Annual

Description	Candidate details for federal, state, and local campaigns
Data Range	2018 to present
Scope	115,000 federal, state, and local candidate records
Update Interval	Weekly