Mitt Romney won the most states Tuesday, but wasn't able to shake off his competition for the Republican presidential nomination. Photo: CNN

(VOVworld) - The Super Tuesday contests in 10 US states have come to an end with Republican candidate Mitt Romney winning his home state of Massachusetts as well as Ohio, Idaho, Vermont, Virginia and Alaska. After Tuesday's 10-state voting marathon, Mr Romney defended his position as the front-runner. Rick Santorum took North Dakota, Oklahoma and Tennessee. Gingrich grabbed a vital triumph in his home state of Georgia, while Texas Republican Ron Paul failed to win in any of the states up for grabs. By the end of Super Tuesday, it was still not clear who will win the Republican Party’s nomination and go on the challenge incumbent President Barack Obama in November’s election.

(VOV’s Washington-based correspondent)