MSNBC host Chris Matthews issued an apology to Sen. Bernie Sanders on his program Monday, two days after comparing the self-described democratic socialist’s surging campaign for the Democratic presidential nomination to Nazi Germany’s conquest of Europe at the start of World War II.

“Before getting into tonight’s news, I want to say something quite important and personal,” Matthews said at the top of his nightly “Hardball” show. “As I watched the one-sided results of Saturday's Democratic caucus in Nevada, I reached for an historical analogy and used a bad one.

“Senator Sanders, I'm sorry for comparing anything from that tragic era in which so many suffered, especially the Jewish people, to an electoral result in which you were the well-deserved winner,” Matthews said. “This is going to be a hard-fought, heated campaign of ideas. And the days and weeks and months ahead, I'll strive to do a better job myself of elevating the political discussion.”

On Saturday night, Matthews said Sanders’s dominating victory in the Nevada caucuses over more mainstream rivals was comparable to Adolf Hitler’s invasion of France.

“I was reading last night about the fall of France in the summer of 1940,” Matthews said during MSNBC’s live coverage of the caucus returns. “And the general, Reynaud, calls up Churchill and says, ‘It’s over.’ And Churchill says, ‘How can that be? You’ve got the greatest army in Europe. How can it be over?’ He said, ‘It’s over.’”

If elected, Sanders would be America’s first Jewish president, yet Matthews’s remarks were the second time in as many weeks that an MSNBC host compared the campaign of the Democratic candidate, who himself lost relatives in the Holocaust to Nazi Germany, to the Nazis.

Sen. Bernie Sanders takes the stage in El Paso, Texas, on Saturday. (Mike Segar/Reuters)

Earlier this month, “Meet the Press” host Chuck Todd read an article on the air comparing Sanders supporters to brownshirts, or Nazi storm troopers. Todd’s comments earned a condemnation from the Anti-Defamation League.

“As we enter a contentious campaign season, it is incumbent upon leaders & pundits to refrain from using offensive comparisons to the Holocaust,” wrote the organization on Twitter, linking to a story on Todd’s comments. “Doing so only diminishes the memories of the 6M Jews who were killed by Nazis & Nazi sympathizers.”

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Supporters of Sanders have been livid at the cable network’s coverage of the primary, singling out other hosts, as well. Nicole Wallace, who served as a White House and campaign staffer for President George W. Bush, was visibly frustrated as the caucus results were coming in, frequently citing the warnings of James Carville, the Democratic strategist who has been urging the party to unite against Sanders because he’d be a general-election disaster.

On Saturday night, Carville mused that Russian President Vladimir Putin was the “happiest person right now” because of the Sanders insurgency.

“I think it’s 1:15 Moscow time,” Carville said. “This thing is going very well for Vladimir Putin, I promise you. He’s probably staying up watching us right now. How ya doin’, Vlad?”

On Sunday, Anand Giridharadas, an MSNBC political analyst, called out both the network and Matthews on air for its coverage of Sanders.

“I think this is a wake-up moment for the American power establishment, for Michael Bloomberg, to those of us in the media, to the Democratic Party,” Giridharadas said. “Many in this establishment as they face the prospect of a Bernie Sanders nomination are like out of touch aristocrats in a dying aristocracy.”

“Why is Chris Matthews on this air talking about the victory of Bernie Sanders — who had kin murdered in the Holocaust — analogizing it to the Nazi conquest of France?” Giridharadas added. “The people who are stuck in an old way of thinking, in 20th-century frameworks, gulag thinking, are missing what's going on.”

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