GOP Presidential Primary

Mitt Romney on Wednesday launched his general-election campaign, acknowledging his expectation to "finally become the nominee" now that Rick Santorum has left the GOP race.

Rick Santorum has vowed to help GOP contender Mitt Romney win the presidential election, according to his press secretary.

The GOP hopeful might fail to appear on the Utah primary ballot after a check for the required filing fee bounced.

Huckabee could serve as a valuable validation that the former Massachusetts governor has left the “Massachusetts” in him behind.

Rick Santorum’s exit from the presidential race on Tuesday essentially guaranteed Mitt Romney the Republican nomination.

Mitt Romney made a strong pitch for women voters who have turned sharply in favor of President Obama.

Pat Toomey, Bobby Jindal, Lindsey Graham and Florida Gov. Rick Scott among those throwing their support to Mitt Romney.

Rick Santorum’s presidential campaign exceeded expectations, but stumbles at key moments prevented a win.

Newt Gingrich on Tuesday sought to recast the GOP primary as a two-man race, saying that rival Rick Santorum's exit "makes it clearer that there's a conservative, named Newt Gingrich, and there's Mitt Romney."

The former House Speaker added on Mike Huckabee's radio show that Santorum's exit from the race provides the one-on-one match-up with Mitt Romney he "spent the whole year hoping to get." In a subsequent statement, Gingrich made a pointed pitch for Santorum's supporters and delegates.

“I am committed to staying in this race all the way to Tampa so that the conservative movement has a real choice. I humbly ask Sen. Santorum’s supporters to visit Newt.org to review my conservative record and join us as we bring these values to Tampa. We know well that only a conservative can protect life, defend the Constitution, restore jobs and growth and return to a balanced budget," Gingrich said.

Rick Santorum dropped out of the presidential race Tuesday afternoon, essentially guaranteeing Mitt Romney the GOP nomination.