Why is Rosie O'Donnell feuding with Rep. Jason Chaffetz?

Democrat Kathryn Allen is challenging Rep. Jason Chaffetz (R-Utah) for his congressional seat in 2018. And now comedian and television personality Rosie O'Donnell is getting in on the fight.

Allen, a physician in Utah, has filed to run against Chaffetz in 2018. O'Donnell has already donated the maximum amount of money to Allen's campaign in an effort to help her defeat Chaffetz, who chairs the House Committee on Oversight and Government Reform.

But Chaffetz took O'Donnell's donation to Allen and tried to turn it into cash for his own campaign, according to USA Today.

"Rosie O'Donnell, (yes, Rosie O'Donnell) just maxed out my Democrat opponent and is tweeting to all of her liberal followers to do the same," Chaffetz said in a recent fundraising email. "I need your help to fight back."

"Rosie O'Donnell is just the beginning. Many more liberal Democrats will most likely follow her in supporting my opponent and working to see me defeated," the email continued. "In order to stay fighting for our traditional values and shared conservative beliefs in Washington — I must win my re-election campaign."

O'Donnell responded in a couple of tweets Monday evening.

"What [Chaffetz] does not understand — this [is] not about GOP vs liberals," O'Donnell said. "It is about truth and human decency — [you] deserve to be voted out."

O'Donnell told Mic that she is glad Allen is raking in the cash for her campaign already. As of press time, Allen's Crowdpac fundraising site has raised more than $458,000.

"We have to make it about truth," O'Donnell told Mic, explaining how a Democrat could win in a heavily conservative state such as Utah.

O'Donnell also admitted that she isn't as "well-versed" in politics when it comes to Allen's long shot at beating Chaffetz. However, Mic reported that she remained hopeful.

"People are waking. It may take a revolution," O'Donnell said.

O'Donnell also promised on Twitter that she would "max out" in donations to campaigns that "run against [President Donald] Trump's criminal crusade."

Allen told Mic that she has been "caught off guard" by the support she's recently garnered.

"Chaffetz is so despised that I actually have national figures who run national campaigns donating services to me," Allen said. "So we won't be spending that money right away. We're going to be very judicious."

She also praised O'Donnell and MSNBC host Rachel Maddow for bringing attention to her campaign.

"Rachel and Rosie — they gave my campaign legitimacy," she told Mic. "I don't know how to thank them."

According to Deseret News, Allen received a boost in her campaign contributions after Chaffetz suggested that Americans should choose to purchase health care instead of the new iPhone.