Bachmann declared her plans in an interview with The Associated Press. The Republican congresswoman had been mum on her plans since folding her presidential campaign after a poor showing in the Iowa caucuses earlier this month.
"I'm looking forward to coming back and bringing a strong, powerful voice to Washington, D.C.," Bachmann said.
Bachmann will be a formidable candidate in Minnesota's 6th District, where other Republican hopefuls had stood aside until she made a decision on running for re-election. Some experts had speculated that Bachmann might instead turn to a career in talk media.
Bachmann is a potent fundraiser who raised $13.5 million in her last House race, but would likely start from scratch after the presidential campaign. A campaign finance report that would show how much money she can bring to the race isn't due until the end of the month.
Bachmann also faces uncertainty over how her district will be reshaped. One redistricting plan put forth by Democrats would throw her into a race with Rep. Betty McCollum, a six-term Democrat who represents the St. Paul area. A special redistricting panel is due to issue maps late next month.
Bachmann was an early media favorite in the chase for the GOP presidential nomination after winning the Iowa straw poll in midsummer, but she eventually faded.
Her announcement came in an interview to react to President Barack Obama's State of the Union speech. Just as she did on the campaign trail, Bachmann criticized Obama for "doubling down on failures that didn't work."
"We have to radically scale back on government spending, we have to radically cut back on debt accumulation," Bachmann said.
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