Republican Sen. Susan Collins of Maine released a campaign ad this week that paints her as a bipartisan workhorse, hoping that it will convince enough voters in left-leaning Maine to cast their ballots for her in November and save her reelection.

Republican Sen. Susan Collins of Maine released a campaign ad this week that paints her as a bipartisan workhorse, hoping that it will convince enough voters in left-leaning Maine to cast their ballots for her in November and save her reelection.