The Hillary Clinton campaign is quietly working behind the scenes to make it as hard as possible for Joe Biden to run for president.
As Biden ponders a challenge to Clinton for the Democratic nomination, she has rolled out a string of high-profile endorsements in the early-voting contests of Iowa and South Carolina and scheduled an onslaught of fundraisers across the country in the effort to throw cold water on a possible Biden bid.
The Hillary campaign and even Hillary herself has contacted Biden donors.
Donors who have publicly expressed support for a Biden run have been contacted by the Clinton team, according to donors and Democratic strategists who spoke on condition of anonymity because they were not authorized to discuss the private conversations. Even Clinton herself has made a few calls, they said, to express her disappointment.
"I have great deal of admiration and affection for him," Clinton said of Biden during a stop in Iowa on Wednesday. "I think he has to make what is a very difficult decision for himself and his family. He should have the space and the opportunity to decide what he wants to do."
On Thursday night, the Hillary camp released a series of memos about their work in early voting states. "For months, we were the only campaign on either side of the aisle with offices and staff reaching out to voters," wrote Clay Middleton, her state director in South Carolina. "This head start has provided an organizing advantage."
But the Biden camp says they have commitments from a number of Clinton supporters that they will switch sides.
"They don't want to put their neck out unless they know Biden is in this," said Jon Cooper, finance chairman of the Draft Biden super PAC, and a top Obama fundraiser. "But I have no doubt he'll be able to put together a national fundraising infrastructure in place overnight." He estimated the PAC would raise as much as $3 million over the next few weeks.