During the last three election cycles, Bain employees have given Democratic candidates and party committees more than $1.2 million. The vast majority of that sum came from senior executives.

Republican candidates and party committees raised over $480,000 from senior Bain executives during that time period.

Recipients include Democratic senators facing tough reelection races this year, such as Jon Tester (Mont.), Claire McCaskill (Mo.), Sherrod Brown (Ohio) and Bill Nelson (Fla.).

The Hill reviewed contributions made from the 2008, 2010 and 2012 cycles.