Montana Democratic Senator Max Baucus is planning to retire according to party insiders. Baucus has served six terms as one of Montana's two senators.
Baucus serves on the powerful Senate Finance Committee and is facing a tough re-election battle in 2014.
According to state party members, this will allow the more popular former Democratic Gov. Brian Schweitzer of Montana to run for the seat.
Despite being a democrat, Baucus is one of a few democrats who voted against gun reform legislation in the senate recently.