When Sen. Chuck Schumer headlined an Iowa Democratic dinner Saturday, he did not travel to the key early-primary state to promote his own presidential ambitions.

Instead, Schumer, D-N.Y., had another person in mind: former Secretary of State Hillary Clinton, who served with Schumer in the Senate -- and whom he emphatically endorsed for president at the Jefferson Jackson dinner.

“I have found my 2016 candidate. She's a virtual guarantee to deliver victory for our party in 2016," Schumer said. "2016 is Hillary's time.”

"Run @HillaryClinton run," Schumer tweeted shortly before his speech. "If you run, you'll win & then we'll all win."

Clinton has acknowledged she is weighing a bid for the presidency in 2016, but broad acceptance among Democrats that she would be an instant frontrunner has left Clinton in no hurry to publicly declare her intentions.

Clinton has remained in the public eye and recently returned to the campaign trail on behalf of her close ally Terry McAuliffe, who is running for governor in Virginia.

Clinton's coy stance has not prevented her from racking up endorsements from Democrats -- including from all of the Senate's Democratic women, who earlier this year privately wrote to Clinton urging her to run for president, and vowing support for her if she did.