Minnesota Republican Rep. Michele Bachmann used the backdrop of Waterloo, Iowa, to enter the 2012 GOP presidential race, but on the eve of the announcement, she misspoke while talking about her native town.

Speaking to Fox News on Sunday evening in front of her modest childhood home, Bachmann said she's a natural fit for the state's first-in-the-nation caucus voters.

"I want them to know just like John Wayne is from Waterloo Iowa, that's the spirit I have too," Bachmann said. "It's embracing America. It's sacrificing for America."

Fans of the Duke immediately spotted the error, however, and called to point out that John Wayne was born 150 miles away in Winterset, Iowa. Serial killer John Wayne Gacy lived and worked in Waterloo.

The Bachmann campaign quickly responded by noting the parents of John Wayne, the iconic American actor, did live in Waterloo for a time.

Though her skyrocketing support already has some supporters fearful she could peak too soon or melt under six months of the glaring media spotlight, The Des Moines Register on Saturday released a poll putting Bachmann and Mitt Romney in a dead heat 10 points ahead of the pack in the leadoff caucus state.

Bachmann's co-frontrunner Romney, the former Massachusetts governor, is skipping August's Ames straw poll and de-emphasizing the Hawkeye state in favor of New Hampshire. But Bachmann is pinning hopes on her native state, spending time and resources to recruit aggressively ahead of the Ames straw poll.