Hillary Clinton's victory over Bernie Sanders in New York's Democratic presidential primary was a devastating blow to the Vermont senator's campaign.

Sanders still has a mathematical possibility of securing the nomination, but he would need to win around 73 percent of the remaining delegates to overcome Clinton's steady lead.

Clinton, who moved to Westchester County and adopted New York as her new home state after husband Bill Clinton left the White House, won Tuesday's primary with a double-digit margin.

Sanders traveled home to Vermont Wednesday, telling reporters he would take the day off to "recharge."

Sanders' senior strategist Tad Devine says Sanders will "take a step back and then decide publicly what his intensions are."

The reversal comes just days after Sanders vowed to fight on through July.

Speaking about the issue during a press call early Wednesday, Sanders said only, "I congratulate Secretary Clinton on her win."

To win the Democratic nomination, the candidates need to secure 2,383 delegates. Clinton has a lead in pledged delegates, who are chosen by voters, and also has a huge advantage in superdelegates, who choose whichever candidate they want.

She has accumulated 1,930 delegates total, and leads Sanders in polls ahead of the upcoming Pennsylvania primary.

With her commanding lead, Clinton pivoted toward the general election Tuesday night and offered an olive branch to Sanders supporters. 

"There is much more that unites us then divides us," she said during her victory speech.

Clinton could face fellow Westchester homeowner Donald Trump, who is the Republican delegate front-runner.