Former Republican vice presidential candidate Sarah Palin is raising more speculation about a possible presidential bid with a stop in Iowa during her national book-signing tour.
Iowa's caucuses have traditionally launched the presidential nominating season.
Palin's book-signing tour has been carefully controlled, and she has not spoken to reporters at most events. Still, her appearance in Iowa is seen as significant.
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Veteran Republican activist Tim Albrecht says politicians don't just happen to stop in Iowa and Palin must know that her visit is seen as a signal she is considering a run.
Another possible Republican contender, Minnesota Gov. Tim Pawlenty, also visited the state recently.
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