Former Michigan Gov. Jennifer Granholm announced Friday via Facebook that she will not run for retiring Sen. Carl Levin’s seat.

“Friends, thanks for all of the encouragement on the Michigan Senate seat, but I’m not going to run,” the Democrat wrote. “I appreciate all of the outreach I’ve received; for several reasons it’s just not right for us (it’s a family decision). My best to all the contenders — Levin’s US Senate seat will stay blue!”

Democrats are in a strong position to keep Levin’s seat given Michigan’s recent voting history. Potential Democratic candidates include Debbie Dingell, the wife of longtime Rep. John D. Dingell, and Reps. Gary Peters and Dan Kildee.

On the GOP side, Reps. Mike Rogers and Justin Amash, former GOP Chair Saul Anuzis and former Michigan Secretary of State Terri Lynn Land are mulling runs.