The last month has not been kind to U.S. Rep. and Republican presidential hopeful Michele Bachmann, and two of the top leaders of her campaign stepped down Monday, according to Politico.

Citing health concerns, campaign manager Ed Rollins announced he is stepping down and will instead serve as a senior adviser to the Minnesota congresswoman. Meanwhile, deputy campaign manager David Polyansky is leaving the campaign altogether.

The Bachmann camp has framed the departures as part of a planned reorganization.

“The plan all along has been to restructure things after the straw poll,” spokeswoman Alice Stewart said.

But the campaign has undoubtedly lost steam since winning the Iowa Straw Poll Aug. 13, which most political pundits attribute to Texas Gov. Rick Perry’s entrance into the race.

A Gallup poll published just two weeks after Bachmann’s victory in Ames put her in fourth in the GOP primary with 10 percent of votes from Republicans and Republican-leaning independents. In that poll, Perry sat atop the pack with 29 percent of the vote, former Massachusetts Gov. Mitt Romney had 17 percent, and U.S. Rep Ron Paul came in third with 13 percent.

Other recent polls from Rasmussen Reports and FoxNews place Bachmann in second or third within the GOP field with between 18 and 8 percent of the vote, respectively.

Rollins himself said in an article published in Monday’s Washington Post: “The Perry-Romney race is now the story, with us the third candidate.”

As Politico points out, the shakeup brings to mind Bachmann’s track record of staff turnover. In her first two terms in Congress, Bachmann hired four chiefs of staff and five press secretaries.

Is this the beginning of the end of Bachmann’s presidential hopes? Doubtful, but after a disappointing month during which Bachmann failed to capitalize on her straw poll victory, these two key administrative changes do not bode well.

Senior adviser Keith Nahigian is taking over as her interim campaign manager.