New Hampshire Republican primary – what to expect and what it can tell us

After Trump's victory in Iowa, his top rival Nikki Haley hopes to make a splash in the critical primary

New Hampshire voters are headed to the polls on Tuesday. After Donald Trump's landslide victory in the Iowa caucus last week, his top rival for the Republican nomination - the former UN ambassador Nikki Haley - hopes to make a splash in the critical primary state.

But the Republican primary is not the only contest being held in New Hampshire on Tuesday. New Hampshire Democrats are moving forward with their own primary, one with a major asterisk: Joe Biden's name will not appear on the ballot as the Democratic National Committee has said that the New Hampshire primary is meaningless" after party officials moved to make South Carolina the first voting state.