A website referencing a fiery exchange between 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.) and South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE at Thursday night's debate redirects users to a page for donations to Sen. Bernie Sanders Bernie SandersTrump, Biden will not shake hands at first debate due to COVID-19 Sanders tells Maher 'there will be a number of plans' to remove Trump if he loses Sirota reacts to report of harassment, doxing by Harris supporters MORE (I-Vt.).

The web address peteswinecave.com leads to the Democratic fundraising platform ActBlue and options for donating to Sanders, a reference to Warren criticizing Buttigieg for holding a fundraiser at a wine cave in Napa, Calif.

“The mayor just recently had a fundraiser that was held in a wine cave full of crystals and served $900 a bottle wine. Think about who comes to that," Warren said. "Billionaires in wine caves should not pick the next president of the United States."

ADVERTISEMENT

Sanders's page on the ActBlue platform says: “Can you make a contribution to our campaign? Our single path to victory is from LOTS of people making small donations. Bernie doesn't have a super PAC or wealthy donors supporting this campaign. There is only one way we win — and that is together.”

Buttigieg defended his fundraisers, saying the goal is to defeat President Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE in 2020.

"You know, according to Forbes Magazine, I am literally the only person on this stage who is not a millionaire or a billionaire," Buttigieg said. "This is the problem with issuing purity tests you cannot yourself pass. If I pledged to never be in the company of a progressive, Democratic donor, I couldn't be up here."

Other candidates on the debate stage jumped into the back and forth, with Sen. Amy Klobuchar Amy Klobuchar3 reasons why Biden is misreading the politics of court packing Social media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight MORE (D-Minn.) saying, "I've never even been to a wine cave. I've been to the wind cave in South Dakota, which I suggest you visit.”