Democratic front-runner Hillary Clinton made a surprise stop in Westchester Monday.

One day before New York's primary, Clinton stopped in St. John's Riverside Hospital in Yonkers and encouraged the staff to vote for her.

The presidential hopeful spoke to a select group of doctors and nurses in the hospital cafeteria, making a pledge that she will do everything she can to support the workers if they vote for her.

"If you will stand up for me and vote tomorrow, the polls will be open until 9 p.m., I will stand up and fight for you through this campaign and into the White House," she said.

While Clinton's visit may have been short, she took some time out of her busy campaign to snap a few pictures with supporters.

Clinton is hoping to crush the momentum of Democratic rival Bernie Sanders after eight straight wins, and there may be reason for optimism. Not only does she have the backing of the state's political elite, but New York is a closed primary, so independent voters who helped propel Sanders' recent winning streak can't vote.

Sanders remains hopeful, saying he will win if the turnout is high.

On the GOP front, Ted Cruz has been closing in on front-runner Donald Trump's delegate lead. Trump took his campaign to the Hudson Vallley for the first time on Sunday.

He spoke to a packed crowd in Poughkeepsie, not far from his weekend retreat in Bedford.