Democratic Senate candidate Troy Jackson faces an uphill battle against billionaire-backed Susan Collins, but $2 million from small donors shows grassroots momentum. Can he overcome Collins' $60 million ad campaign and win with progressive policies?

Former state lawmaker and logger Troy Jackson has secured the Democratic nomination for U.S. Senate in Maine

Jackson is expected to be selected as the party’s nominee at Saturday’s state party convention after all of his major opponents dropped out of the race.