• INTERACTIVE: County-by-county breakdown of the results
• Romney, Santorum in Iowa photo finish
• Late, late, late deciders flock to Santorum
• Romney’s watchwords in Iowa: Divide and conquer
• Iowa deadlock could change race in New Hampshire
• Santorum ‘committed’ to competing in N.H., S.C.
• Ron Paul benefits from Democrat crossovers
 

President Obama reached out to his Iowa supporters Tuesday night, grabbing a turn in the political spotlight as voters headed to the first-in-the-nation caucuses in a state that catapulted Obama to the presidential nomination four years ago but where he is now vulnerable.