Ted Cruz's campaign manager believes Donald Trump, the Republican presidential front-runner, should abandon his White House hopes if he can't win a majority of votes in his home state of New York on April 19.

Cruz himself only won 44 per cent in his native Texas when he claimed victory in the Texas GOP primary. Trump claimed 27 per cent.

Ohio Gov. John Kasich also failed to top 50 per cent in his

'I'm assuming Donald is very strong in his home state,' Jeff Roe said Thursday during the ABC News 'Powerhouse Politics' podcast.

'If he doesn’t get over 50 percent, he should probably consider dropping out, like everyone else has when they don't win their home state in a dramatic fashion,' Roe jabbed.

DROP OUT, DONALD: Ted Cruz's campaign manager Jeff Roe says Trump should quit the White House race if he can't win 50 per cent of the vote in New York's primary

NEW YORK VALUES? Cruz, shown Thursday learning to make matzah in Brooklyn, only won 44 per cent in his home state of Texas, and he's shown no sign of quitting

He acknowledged that Trump is the 'huge favorite' in the Empire State and that Cruz, a Texas senator, considers the election an 'away game.'

Cruz has attracted flak for criticizing what he calls 'New York values,' and attracted protests in the Bronx when he visited there on Wednesday.

'People know what New York values means,' Roe said, insisting that it's a commentary on strict gun-control laws and menu-control ordinances the Big Apple's Democrat-dominated government has enacted.

'It’s a big city, liberal government that does a lot of crazy stuff and their values are not in touch there as they are in other places,' he said.

'The liberals there are different creatures, and that’s what he was talking about … and Donald Trump has funded all those people.'

FRONT-RUNNER: Trump is polling at 52 per cent in New York, according to a Monmouth University survey

FUGEDDABOUTIT: Cruz's camp believes he can win the nomination outright before the July convention even though he would have to snare 87 per cent of the remaining delegates

Roe claimed Cruz has a path forward to the GOP nomination and can 'absolutely' capture the 1,237 delegates he needs to win it.

That, however, would require him to collect 87 per cent of the delegates that remain to be awarded in upcoming primary elections.

'This hasn’t played out at all,' he said, 'and I think there are still some surprises left.'

'It all comes down to California,' Roe predicted, pointing to the 172 delegates up for grabs there on June 7.