Trump cemented his status as the Republican front-runner and polls show he is leading many of the super Tuesday states.

Billionaire businessman Donald Trump inched closer to the US Republican presidential nomination after easily out- distancing his rivals in the Nevada caucus, giving him his third win in four early nominating contests.

The Republican National Committee will be scrutinizing Tuesday night's caucus to see how smoothly it goes. This comes after the caucus in 2012 was plagued with problems.