StatešļøMontana2022 IncumbentJon TesterOfficešļøUS SenatorNext Election2024Wikipedia (District)https://en.wikipedia.org/wiki/List_of_United_States_senators_from_MontanaBallotpedia (District)https://ballotpedia.org/List_of_United_States_Senators_from_MontanaSenate ClassSenate Class - I