EDGE Las Vegas

Another victory in hand but still badly trailing rival Mitt Romney, Republican presidential hopeful Rick Santorum vowed to continue his campaign despite an increasingly steep climb to the nomination.

Mitt Romney took a major stride toward the Republican presidential nomination Tuesday night, routing Rick Santorum in the Illinois primary.

Mitt Romney scored an overwhelming win Sunday in Puerto Rico’s Republican presidential primary, trouncing chief rival Rick Santorum even as the two rivals looked ahead to more competitive contests this week in Illinois and Louisiana.

An upbeat Rick Santorum barreled into Puerto Rico on Wednesday in pursuit of another campaign-bending victory in a Republican presidential race where suddenly no primary is too minor and no delegate is conceded.

A new poll shows that the ultra-conservative GOP presidential candidate Rick Santorum is the most trusted when it comes to gay marriage.

A resurgent Rick Santorum swept primaries in Alabama and Mississippi Tuesday night, upending the race for the Republican presidential nomination as he sought to push Newt Gingrich toward the sidelines.

Rick Santorum won the Kansas caucuses in a rout on Saturday and Republican presidential front-runner Mitt Romney showed strength in Wyoming, a weekend prelude to suddenly pivotal Southern showdowns in the week ahead.

Mitt Romney and Rick Santorum are trying to make the most of a mixed Super Tuesday, each claiming a measure of victory but unable to settle the most tumultuous race for the GOP presidential nomination in decades.

GOP presidential hopeful Rick Santorum says that if he is elected president, he would not only ban gay marriage but also nullify all existing same-sex marriages in the country.

Mitt Romney rolled to a double-digit victory in Washington state’s Republican presidential caucuses Saturday night, his fourth campaign triumph in a row and a fresh show of strength in the run-up to 10 Super Tuesday contests.