An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
Colorado GOP Caucus 2012
Mitt Romney speaks on the Auraria campus in Denver on Feb. 7, 2012. (credit: CBS)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
GOP Colorado Caucus 2012
CBS4's Valerie Castro reports from Grandview High School in Aurora just before the start of the Colorado GOP caucus on Feb. 7, 2012. (credit: CBS)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
Caucus in Colorado
CBS4's Shaun Boyd on the Auraria campus in Denver on the night of the GOP Colorado caucus on Feb. 7, 2012. (credit: CBS)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
GOP Caucus Day In Colorado
Republican presidential hopeful Mitt Romney supporters await his arrival for a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
GOP Colorado Caucus 2012
Republicans gathered on the Auraria campus in Denver prior to Mitt Romney's speech on Feb. 7, 2012. (credit: CBS)
GOP Colorado Caucus 2012
Republicans attend the caucus at Grandview High School in Aurora on Feb. 7, 2012. (credit: CBS)
GOP Colorado Caucus 2012
Republicans gathered on the Auraria campus in Denver prior to Mitt Romney's speech on Feb. 7, 2012. (credit: CBS)
GOP Caucus Day In Colorado
An image from the Republican caucus at Grandview Middle School in Aurora. (credit: CBS)
GOP Caucus Day In Colorado
Supporter of Republican presidential hopeful Newt Gingrich displays an anti-Obama sticker at a rally February 6, 2012 in Golden, Colorado, on the eve of the state caucus. (credit: STAN HONDA/AFP/Getty Images)
GOP Caucus Day In Colorado
Rick Santorum campaigns in Colorado Springs on Feb. 7. (credit: CBS)
GOP Caucus Day In Colorado
A sign welcomes Republican presidential hopeful Mitt Romney for a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)
GOP Caucus Day In Colorado
Republican presidential hopeful Mitt Romney holds a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)
GOP Caucus Day In Colorado
Republican presidential hopeful Mitt Romney holds a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)
GOP Caucus Day In Colorado
Republican presidential hopeful Mitt Romney holds a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)
GOP Caucus Day In Colorado
Republican presidential hopeful Mitt Romney holds a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)
GOP Caucus Day In Colorado
Republican presidential hopeful Mitt Romney holds a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)
GOP Caucus Day In Colorado
Rick Santorum campaigns in Colorado Springs on Feb. 7. (credit: CBS)
GOP Caucus Day In Colorado
Republican presidential hopeful Mitt Romney arrives for a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)
GOP Caucus Day In Colorado
Republican presidential hopeful Mitt Romney hands back over one-year old Madison Busch, supporter's child, during a campaign rally at RV America in Loveland, Colorado, February 7, 2012. (credit: EMMANUEL DUNAND/AFP/Getty Images)