New Zealand is definitely feeling the Bern, handing a 54 percentage point win to the Senator from Vermont.

Democratic upstart Bernie Sanders has won a resounding victory against Hillary Clinton in the first contest of Super Tuesday.

With all 28 votes cast and counted, we can confidently call the all-important Wellington ballot for Senator Bernie Sanders of Vermont, with 21 votes to Clinton's six.

No, this isn't that other Wellington in Florida - New Zealand has once again exploited its time zone advantage, this time casting the first vote of Super Tuesday in the US Presidential elections.

The ballot, held at Courtenay Place bar Public, attracted 28 American expats. One of them spoiled their vote.

READ MORE:

*Hillary Clinton wins South Carolina primary

*US election 2016: The scariest things said on the campaign trail

*Former CIA director feels military may not follow Donald Trump's orders if elected

"Super Tuesday" refers to a day early in the US primary process when a huge number of primary elections are held. This year it falls on March 1 - so, Wednesday NZ time.

But why not get things going a little early? The New Zealand branch of Democrats Abroad have decided to follow the lead set by three New Hampshire towns who vote at midnight in their primaries, and hold a vote at midnight on our Tuesday in New Zealand.

It's the first time New Zealand has led the voting, New Zealand Democrats Abroad Chair Kat Allikian said.

"The timezone has a lot to do with it. The other factor over 2012 and 2008 is that we have much more of a presence in Wellington this time around" she said.

The vote is part of a global overseas primary sponsored by the Democrats, with expat Americans in 39 countries voting between March 1 and 8.

13 delegates and eight superdelegates are up for grabs in the overseas primary - although three of the superdelegates have already pledged support for Hillary Clinton.

In the last primary in 2008, more than 23,000 voters turned up from overseas, handing a victory to Barack Obama over Hillary Clinton.

If a similar number head to the ballots this week, Wellington's voters will make up an impressive 0.012 percent of the overall primary turnout.

Still - Allikian emphasises a vote in the overseas primary is often a much more powerful than a vote in an expat's home state.

"A vote in the global primary carries a lot more weight in terms of numbers of vote per delegate," she said.

"These are very rough numbers, but in 2008, there were around 12,000 or 13,000 votes per delegate. In the global primary this is more in order of 1100 votes per delegate.

"It's also just kind of neat."