Romney Wins Caucuses in Wyoming, Virgin Islands, Guam and Northern Mariana Islands

(AP) -- Mitt Romney has won the Republican presidential delegate vote at Wyoming's county conventions. That adds to his advantage in the party's race for the nomination.

Earlier Saturday, Rick Santorum won the GOP caucuses in Kansas.

In Wyoming, Romney won six delegates. Santorum gained three and Ron Paul one. Another remains uncommitted, and one more is still to be decided.

Earlier Saturday, Romney further padded his delegate lead by winning all nine delegates on the island of Guam and nine delegates in the Northern Mariana Islands.

Tuesday's upcoming primaries in Alabama and Mississippi now loom as critical. Polls show a close race in both states, particularly Alabama.

The Republican Party chairman in the U.S. Virgin Islands says Republican presidential front-runner Mitt Romney has also won the territory's GOP caucus.

Chairman Herb Schoenbaum says Romney can count on seven delegates from the Virgin Islands. He already had three superdelegates before Saturday's caucuses and he picked up three more in voting in St. Thomas and St. Croix. After the vote, an uncommitted delegate switched to Romney.

Ron Paul got one delegate, and one delegate remains uncommitted.

Residents of the U.S. Virgin Islands can participate in primaries but like residents of nearby Puerto Rico cannot vote in the general election.