 The next three most popular parties were the SP (27.98%), the Ticino League (9.52%) and the CVP (4.76%).In the federal election, a total of 21 votes were cast, and the voter turnout was 58.3%.In the "Gran Consiglio" election, there were a total of 37 registered voters in Gresso, of which 19 or 51.4% voted.