Voter Information from the Acton Town Clerk.
Elections Information, from the Secretary of the Commonwealth of Massachusetts, including Online Voter Registration, Where Do I Vote, and 2016 Ballot Questions ...
Elections and candidate information from Project Vote Smart.
Massachusetts Office of Campaign & Political Finance, including campaign finance activity for all statewide candidates.
Open States, from the Sunlight Foundation, includes information on legislators, including campaign finance and voting records.
PolitiFact.com, a project of the Tampa Bay Times, includes the "Truth-O-Meter," which fact-checks political statements, and rates claims for accuracy.