MSNBC anchor Andrea Mitchell drilled a Hillary Clinton spokesman on Wednesday over whether the campaign was strapped for cash as Clinton faces a strong Democratic primary challenge from socialist Sen. Bernie Sanders (I., Vt.).

Mitchell asked Brian Fallon why Clinton is doing a fundraiser in Philadelphia in the critical final days before the Iowa caucuses on Feb. 1. Clinton was originally slated to also have one in New York, but The Intercept reported that had been postponed until Feb. 16.

Mitchell noted Clinton trails Sanders in a Quinnipiac Iowa poll, suggesting Clinton might be "cutting it a little close."

"Does she need the money because it's now going to be a longer race than she had anticipated?" Mitchell asked.

"Oh, we've always planned for a long race, Andrea, and I don't think we're going to have any problem raising the resources we need to contest this nomination as far as it goes, but there's also going to be other meetings that will probably be read out later in the day that she's doing today," Fallon said. "But, so, it's not all fundraising, Andrea. But yeah, the realities of fundraising are what they are, but we're ready for a long nomination fight, if necessary, but she's still in Iowa every day this week."

"Other meetings in Iowa?" Mitchell asked.

"Other meetings with important voters and leaders that will be important parts of our support base in the coming months," Fallon said.

"Any new endorsements?" Mitchell asked.

"We'll see," Fallon said.

Full exchange: