Gentry Collins: Romney's 2008 Iowa campaign manager is one of the most sought-after names in Republican circles. Whichever candidate signs Collins will have scored a big win.
Kim Lehman: The Republican National Committeewoman is also one of the top social conservative voices in the state. She was president, until last year, of Iowa Right to Life.
Chuck Larson: Larson, a former top advisor to McCain, former state GOP chairman and a veteran of state politics, is advising Tim Pawlenty in 2012.
Eric Woolson: Woolson stunned the national political establishment by winning the 2008 caucuses for Mike Huckabee. He'll have his pick of campaigns in 2012.