WASHINGTON (AP) _ Rick Santorum has delivered a stinging blow to front-runner Mitt Romney, winning political caucuses in Colorado and Minnesota in the race for the GOP presidential nomination.
Santorum also won a non-binding primary in Missouri that gave him some bragging rights but no delegates.
Santorum’s three-state sweep raised fresh doubts about Romney’s ability to win over conservative voters.
And it gave Santorum grounds for claiming that he – not Newt Gingrich – is the strongest conservative alternative to Romney.