Fox News contributor and former interim Democratic National Committee (DNC) Chairwoman Donna Brazile Donna Lease BrazileHow Biden decided on Harris Trump tweets 'we all miss' Ailes after swiping at Fox Trump complains Fox News is 'doing nothing to help' him get reelected MORE late Tuesday called Joe Biden Joe BidenThe Memo: Warning signs flash for Trump on debates Senate Republicans signal openness to working with Biden National postal mail handlers union endorses Biden MORE’s comeback in the Democratic presidential primary the “most impressive 72 hours I’ve ever seen in U.S. politics.”

Brazile called the former vice president's unexpected win in Massachusetts the climax to an impressive performance on Super Tuesday.

"A candidate who was simply hanging by his little bit of supporters came back," Brazile said during the network's coverage.

ADVERTISEMENT

Brazile said she was most shocked by his "impressive wins tonight, in states that I didn't even think Joe Biden had a presence in.”

Biden was projected to win in several Super Tuesday states including Texas, Minnesota, Massachusetts, Virginia, Tennessee, Alabama, North Carolina, Arkansas and Oklahoma. Sen. Bernie Sanders Bernie SandersSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.) is predicted to come out on top in his home state of Vermont as well as in Colorado, Utah and California. Maine was too close to call.

Brazile predicted a “big battle for delegates” as the two candidates compete in later races, including the races on March 10 in Michigan, Mississippi, Missouri, Idaho, North Dakota and Washington state.

But she said “the biggest prize” will come on St. Patrick’s Day when delegates from Ohio, Illinois, Florida and Arizona are awarded.

"This race is not over," Brazile said. "It's still fluid, but clearly we now have two top delegate trackers that we need to take a look at."

ADVERTISEMENT

The former vice president had a rough start to the 2020 primary season, earning fourth and fifth places in Iowa and New Hampshire, respectively, as Sanders soared, winning the popular vote in Iowa and the delegate vote in New Hampshire.

But Biden started his comeback with a win in South Carolina last weekend, his first of the season.

Following that victory, Biden’s fellow moderate candidates, former South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBogeymen of the far left deserve a place in any Biden administration Overnight Defense: Woodward book causes new firestorm | Book says Trump lashed out at generals, told Woodward about secret weapons system | US withdrawing thousands of troops from Iraq A socially and environmentally just way to fight climate change MORE and Sen. Amy Klobuchar Amy KlobucharEPA delivers win for ethanol industry angered by waivers to refiners It's time for newspapers to stop endorsing presidential candidates Biden marks anniversary of the Violence Against Women Act, knocks Trump and McConnell MORE (D-Minn.), dropped out of the race and endorsed the former vice president in an effort to consolidate the moderate vote to prevent Sanders from winning the Democratic nomination.