Despite Romney's wealthier, well-oiled campaign, he and Santorum each collected about a fourth of the vote. The Iowa GOP said Romney got 30,015 votes, to 30,007 for Santorum, who racked up support while touring Iowa's rural areas in his pickup truck.

Michele Bachmann has ended her presidential campaign leaving her supporters up for grabs as Rick Santorum tries to become the conservative heavyweight in the Republican race.

An adviser to Michele Bachmann says the Minnesota congresswoman is ending her bid to win the Republican presidential nomination.

Republican presidential candidate Rick Perry is rolling out an economic plan that includes a flat tax proposal, private retirement accounts for Social Security and a lower corporate tax rate.

Perry told the Western Republican Leadership Conference on Wednesday that he'll unveil the tax as part of his broad plan to revive the economy and create jobs. He says he plans to outline his proposal in an economic speech next week.