MILWAUKEE -- Bernie Sanders won the Democratic presidential primary in Wisconsin on Tuesday, April 5th, inflicting a tough loss on front-runner Hillary Clinton and racking up his sixth win of the past seven state contests.
On the Democratic side, Sanders is aiming to capitalize on a hot streak heading into the delegate-rich New York primary on April 19, where Clinton hopes to secure a win on home turf to maintain her big delegate lead.
He told an enthusiastic crowd in Laramie, Wyoming, after Tuesday's Wisconsin win that he has "momentum" and hailed the progress of a campaign he said was written off as "fringe" last year.
Sanders was also confident of his chances in New York, the state where he was born and that Clinton represented in the Senate.
"Please keep this a secret. Do not tell Secretary Clinton -- she is getting a little nervous and I don't want her to get more nervous -- but I believe we have got an excellent chance to win New York and a lot of delegates in that state," Sanders said.
Hillary Clinton
Clinton took to Twitter to congratulate Sanders, and to encourage her supporters to keep at it.
"To all the voters and volunteers who poured your hearts into this campaign: Forward!" she wrote.
Earlier Tuesday, it was clear that Clinton was moving beyond Wisconsin. She held a "Women for Hillary" town hall meeting in Brooklyn, where she focused squarely on Republicans and rebuked Trump for "peddling prejudice" about women and Muslims.
"I wish he'd get out of one of his towers and actually walk the streets and spend time with the people of this city," Clinton said.
Clinton also held a fundraiser in New York City on Tuesday night before returning to her home in Chappaqua to watch the results, CNN's Jeff Zeleny reported.
Bernie Sanders one-on-one with FOX6's A.J. Bayatpour
The former secretary of state is under intense pressure to match the fundraising juggernaut that is the Sanders campaign. The Vermont senator out-raised her by $15 million in March with his haul of $44 million -- one reason, alongside his string of primary victories, why he has no incentive to get out of the race.
Still, he has a more complicated task than Cruz in slowing his party's front-runner, since Democratic delegates are doled out on a proportional basis rather than the winner-take-most formula used in Wisconsin by Republicans.
And Sanders' vulnerabilities on issues beyond his core economic talking points were on display in an interview with the New York Daily News editorial board that was published Monday. The interview showed him having difficulty answering some questions about both foreign and domestic policy.
Clinton and Sanders are chasing their magic number of 2,383 delegates to win the nomination. Clinton currently has 1,742 total delegates -- 1,259 of whom are pledged or bound to vote for her and 483 superdelegates who have said they support her but theoretically could switch allegiances. Sanders has 1,051 total delegates, including 1,020 pledged and 31 superdelegates.
For complete coverage of the presidential primary in Wisconsin -- and other races on the ballot on April 5th, CLICK HERE.