The progressive group Demand Justice released an ad on Tuesday hitting back Sen. Michael Bennet (D., Colo.) for his criticisms of the group.
"Donald Trump is giving our courts a right-wing makeover and Senator Michael Bennet is helping him do it," the ad begins.
Demand Justice is a progressive organization that focuses on stopping President Donald Trump's judicial nominees. They have a report where they give a grade to every Democratic senator based on their record in stopping "Trump's takeover" of the federal courts.
Bennet, who is also running for president, received a "F" from the group and was asked on Sunday how he will defend his record from a progressive base during the Democratic primary.
"Here's what I would say. I have clearly said—and it doesn't fill me with any pleasure to say this—I have clearly said that I have not agreed with the Democratic strategy when it comes to judges. And I think the proof is in the pudding," Bennet said.
He added that he accepts some responsibility in failing to stopping Trump's judicial nominees but asserted the majority of the blame goes to groups like Demand Justice for employing a failed strategy.
"The people behind that super PAC that are attacking me for an 'F,' they deserve an 'F' because they helped conceive that strategy and they continue to conceive it," he said.
Demand Justice's ad hit Bennet for voting for Trump's nominees 67 percent of the time and for praising Supreme Court Justice Neil Gorsuch. Bennet refused to filibuster Gorsuch's nomination and said Democrats were outmaneuvered by Senate Majority Leader Mitch McConnell (R., Ky.).
"Hey Michael Bennet, what gives? Helping Trump is not a good look," the ad concludes.
Bennet is not the only presidential candidate to receive a failing grade from the group. Sen. Amy Klobuchar (D., Minn.) also received a "F." Meanwhile other Democratic senators like Sen. Elizabeth Warren (Mass.), Sen. Kirsten Gillibrand (N.Y.), Sen. Cory Booker (N.J.) Sen. Kamala Harris (Calif.) and Sen. Bernie Sanders (I., Vt.) received an "A" grade.