Democratic presidential candidate Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE said Tuesday that he plans to do “very well” in Iowa and New Hampshire amid questions about whether he can win the early primary and caucus states.

Asked in an MSNBC interview about the early contests, Biden said, “I plan on doing very well in both those."

“The polls, as you know, are up and down," he continued. "I’ve been ahead in Iowa. I’ve been ahead in South Carolina. I’m ahead in all the national polls with the occasional one that pops up that’s different." ADVERTISEMENT

The polling aggregation site RealClearPolitics has Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) ahead of Biden in the polls in both Iowa and New Hampshire with fewer than 100 days before the Iowa caucus.

The Massachusetts senator leads the former vice president by an average of 5 points in Iowa and 3.3 points in New Hampshire, according to RealClearPolitics.

In recent weeks Biden’s campaign has suggested that he could lose Iowa and New Hampshire and still win the nominating contest after big wins in South Carolina and Nevada, but Democratic donors interviewed by The Hill on Tuesday expressed doubts.

“The real challenge isn’t whether he can fight another day in South Carolina, but whether he can show the resilience and determination necessary to fight in Iowa,” said Robert Zimmerman, a major Democratic donor and Democratic National Committee member. “The early contests historically are very defining for choosing the nominee."

Another Democratic fundraiser who helped propel recent Democratic nominees, including President Obama and former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonBloomberg rolls out M ad buy to boost Biden in Florida Hillicon Valley: Productivity, fatigue, cybersecurity emerge as top concerns amid pandemic | Facebook critics launch alternative oversight board | Google to temporarily bar election ads after polls close Trump pledges to make Juneteenth a federal holiday, designate KKK a terrorist group in pitch to Black voters MORE, added that Biden's campaign strategy is "rather defeatist."

"They're essentially saying, 'We're losing. Look to someone else,' and I think the big fear is that someone might," they said. "No one wants to support someone who is projecting defeat. Not ever. But especially not this year."

Even Biden allies say something needs to change.

"We're not doing something right, clearly," the ally said. "I can't imagine Barack Obama Barack Hussein ObamaDemocrats ramp up pressure on Lieberman to drop out of Georgia Senate race The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements Trump pledges to make Juneteenth a federal holiday, designate KKK a terrorist group in pitch to Black voters MORE ever saying, 'We'll lose in the first two states, but don't worry, we'll still win.'"

Biden’s comments follow news that he has less cash on hand than other major Democratic contenders like Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.) and Warren.

Biden, Sanders and Warren are among more than a dozen candidates seeking the 2020 Democratic presidential nomination.

Brett Samuels contributed.