Hillary Clinton and Donald Trump have both won overwhelmingly in the New York primary. It enabled them to gain the huge lead in the delegates, and hold off their party opponents in the race.

Winning by a wide margin in New York means Hillary Clinton is back on track to become the Democratic nominee for US President.

Her margin of victory - if repeated in states like Pennsylvania next week - could pressure her opponent Democratic Socialist, Bernie Sanders, to drop out. 

Clinton's win in New York was marred by problems with voting - including over 100,000 Democrats being removed from election lists. New York's electoral system - along with many other US states in the - are old and lack transparency.  

No such problems for the Republicans. Billionaire New Yorker Donald Trump won his home state by a whopping margin a huge turnout.

While Trump is now an undisputed front-runner, he may not get the 12-hundred, thirty-seven delegates needed to secure the Republican nomination before the convention-where party leaders have made it clear they will try to block his candidacy.

Trump is trying to convince his party that if he comes close he should be awarded the nomination for President anyway-and avoid a messy nominating contest at the Party's convention in July.  

Donald Trump's opponents say if he doesn't get a majority by the end of this process then he doesn't deserve to be the Presidential nominee. Trump says denying him would mean denying the millions of voters who want change and have voted for him. It's a powerful argument that will grow stronger if he wins more contests in the way he won New York.