These files give data on some US elections.

Election1888.xlsx
Election2000CertifiedResults.xlsx
Election2000Florida.xlsx
Election2000Results.xlsx
Election2004.xlsx
Election2008.xlsx
VoterParticipation2008.xlsx
VoterTurnout.xlsx
VotingByState92-04.xlsx
Voting_Rates_and_Registration_Rates_by_state_1972_to_latest .xlsx
Voting_Rates_and_Registration_Rates_Total_and_by_Race_and_Age.xlsx