US Senator and former Governor George Allen of Virginia
US Senator Sam Brownback of Kansas
Governor Tim Pawlenty of Minnesota
Governor Mike Huckabee of Arkansas
US Representative Tom Tancredo of Colorado
I'm looking at the first three at the moment.
Tancredo doesn't stand a chance despite what his worshipers believe. One issue wonders and people who run their mouth like he does do not win national elections. Just look at Pat Buchanan.