Romney vows to keep his campaign focused on defeating Obama Margin of Victory is closest ever for GOP presidential contest . Santorum 's campaign says he proved he 's the only conservative who can beat Romney McCain to endorse Romney , senior GOP official says . Romney was the GOP front-runner in several major Iowa polls last week , with Paul second and Santorum third . Paul says ` ` the idea of liberty is appealing to everybody '' Romney collects 30,015 votes , Santorum collects 30,007 .
Romney vows to keep his campaign focused on defeating Obama Margin of Victory is closest ever for GOP presidential contest . Santorum 's campaign says he proved he 's the only conservative who can beat Romney McCain to endorse Romney , senior GOP official says . Paul says ` ` the idea of liberty is appealing to everybody '' Romney collects 30,015 votes , Santorum collects 30,007 .