Montana state schools superintendent Denise Juneau announced Monday that she will not seek the open Montana Senate seat, leaving Democrats still in search of a standard-bearer in the race.

"After much deliberation, I have decided not to seek the U.S. House or Senate seats in 2014," Juneau said on her Facebook page. "I sincerely appreciate the outpouring of support and encouragement I have received from people all across Montana and the country."

Juneau's decision comes three weeks after former governor Brian Schweitzer threw Democrats for a curve by declining to run. Since then, a trio of women -- state auditor Monica Lindeen, Emily's List President Stephanie Schriock and now Juneau -- have declined to run.

Other potential candidates include John Lewis, a former aide to retiring Sen. Max Baucus (D-Mont.) and state Supreme Court Justice Brian Morris, Lt. Gov. John Walsh and state Sen. Kendall van Dyk.

On the GOP side, former state senator Corey Stapleton is running, as is state Rep. Champ Edmunds. Freshman Rep. Steve Daines is also considering running.