Rep. Michele Bachmann won the Iowa Straw Poll Saturday, affirming her status as a top-tier candidate in the Republican race to challenge President Obama in 2012.

Bachmann received 28 percent of the nearly 17,000 votes cast. Texas Rep. Ron Paul was close behind her with 27 percent. Former Minnesota Gov. Tim Pawlenty came in a distant third with 13 percent of the vote, followed by former Pennsylvania Sen. Rick Santorum with 9 percent and businessman Herman Cain with 8 percent.

"We just sent a message that Obama will be a one-term president," Bachmann told her cheering supporters outside of her bus. Bachmann cast her victory as a "down payment on taking our country back."