The New York Democratic presidential primary could be up for grabs, with more than a third of voters indicating they are still undecided — a significantly higher percentage than the support expressed for any of the candidates, a poll released Tuesday reveals.

The Siena College survey found that 22 percent of Democrats said they support former Vice President Joe Biden to be their party’s nominee for president, followed by Massachusetts Sen. Elizabeth Warren with 17 percent and Vermont Sen. Bernie Sanders with 15 percent.

But 34 percent of Democrats queried did not state a preference. Half of Latinos and self-described conservative Democrats are on the fence or refused to answer.

California Sen. Kamala Harris has the support of 4 percent, followed by South Bend, Indiana, Mayor Pete Buttigieg with 3 percent.

No other candidate tops 1 percent.

New York City Mayor Bill de Blasio and New Jersey Sen. Cory Booker registered less than 1 percent.

The New York primary will be held April 28.

When asked who has the best chance to win in 2020, 37 percent say Biden, 13 percent say Warren and 11 percent say Sanders.

But again, one-third of voters did not state a preference.

In terms of the horse race, the New York poll mirrors national surveys that show Biden, Warren and Sanders in the top three slots.

“Although Biden, Warren and Sanders are leading the pack among New York Democrats, more than one-third of those Democrats — more than support front-runner Joe Biden — are still undecided,” pollster Steve Greenberg said.

But he said there’s plenty of time for New York Democrats to make up their minds.

The survey of 359 Democrats has a margin of error of 6.1 percentage points.