Former U.S. state of Arkansas Governor Mike Huckabee has won the Republican caucus in the state of West Virginia, the first win in today's Super Tuesday presidential nominating contests.
Huckabee, who won 18 delegates, beat rivals Arizona Senator John McCain and former Massachusetts Governor Mitt Romney.
Voters in 24 different states are at the polls to make their choice for the Democratic and Republican Party nominees for the November presidential election. Republicans are holding contests in 21 states, and Democrats are competing in 22 states.
In the Democratic race, national polls show Senators Hillary Clinton and Barack Obama nearly tied for the party's nomination.
Polls on the Republican side show Senator McCain pulling ahead of Romney, with Huckabee running third.
Populous states such as California and New York are among those holding primary elections or caucuses on Tuesday. By winning a state, a candidate secures delegates to the party's national convention, and the candidate with who exceeds the number of delegates needed to be nominated will be the party's choice for president.