Voters in West Virginia and Nebraska are casting primary ballots on Tuesday, but the only competitive presidential race that remains in the Democratic contest in West Virginia. With Nebraska's Democrats having caucused in March — giving Bernie Sanders a comfortable win over Hillary Clinton — the state's Republicans went to the polls Tuesday with their party's presidential race all but sewn up by businessman Donald Trump. Voters must decide several other races, though, including the Republican contest to pick a challenger to U.S.