"In 30-plus years of politics, I’ve never seen this level of doom," said one prominent centrist Democrat.

Moderate Democrats watched in horror as Bernie Sanders soared to a landslide victory in Nevada.

It wasn't the win that was surprising — it was the walloping Sanders gave his opponents, his ability to dominate among Latino voters, and the momentum he gained moving into South Carolina and Super Tuesday. The performance sent already worried Democrats into a full-blown panic.

Lots of Democrats are in full panic that Bernie Sanders will win the nomination and get clobbered in the general election — and bring the party down, too. But the evidence, particularly the polling, doesn't back those doomsday warnings.

Why it matters: Virtually every national and swing state poll shows Sanders tied with or beating President Trump. And, unlike every rival, he has a huge base of fervent, unshakable supporters he can only grow.

Tensions between Democratic Party loyalists and Vermont Sen. Bernie Sanders are reaching a boiling point as the democratic socialist cemented his front-runner status for the party's 2020 presidential nomination.

Ahead of his decisive victory in the Nevada caucuses, Sanders tweeted out a message that has been a central theme in his campaign: "I've got news for the Republican establishment. I've got news for the Democratic establishment. They can't stop us."

Moderate Democrats in line to see Sen. Amy Klobuchar (D-MN) at a town hall on a snowy morning the day before the New Hampshire primary say they are torn between her and former South Bend, Indiana, Mayor Pete Buttigieg.

Former Vice President Joe Biden — who once enjoyed a comfortable lead in the state, and still leads nationwide — did not factor as an option, they said.

Biden’s problem: electability.

Voters who spoke with Breitbart News before the town hall said that Biden, at age 77, seemed too old to be effective, and that he “doesn’t have it” in debates.

This Martin Luther King Jr. Day comes as moderate Democrats, falling in line behind former vice president Joe Biden, are warning that the party risks re-electing Donald Trump if it nominates too radical a candidate for president — by which they mean someone like Senators Bernie Sanders or Elizabeth Warren.

This so-called moderate world view is underpinned by the belief that, over the arc of this nation's history, we have been striving for and realizing a "more perfect union" through disciplined incrementalism and market capitalism.

Will voters punish moderate Democrats in swing districts for an impeachment vote? Conventional political wisdom says yes. But our reporter found that in one former Republican stronghold that may not be the case.

With Bing Crosby crooning and sleigh bells jingling over a sound system, Becky Haslett attended last week’s holiday open house for Rep. Gil Cisneros with a broad smile. He is one of seven Democrats who flipped House seats from red to blue in California last year.

Impeaching President Trump will be an easy "yes" vote for many liberal Democrats. But vulnerable moderates face the difficult choice: oppose voters in their districts, or their own caucus.

“I’m leaning no,” Rep. Collin Peterson, a Minnesota Democrat, told the Washington Examiner. “I want to look at everything.”

Former Vice President Joe Biden just declared war on “the squad.”

In an on-screen interview with Axios, which will air this weekend on HBO, Biden fired back against allegations that the Democratic Party has moved leftward, and suggested that Rep. Alexandria Ocasio-Cortez (D-NY) and other recently elected progressives don’t represent the future of the party as much as they represent a new party, entirely separate from the Democrats’ apparatus.

New entrants into the race. A nod from Barack Obama. Centrist victories in governor’s contests. Moderates sense a favorable shift.

After spending months in anxious passivity, staking their hopes on Joseph R. Biden Jr. and little else, moderate Democrats appear suddenly determined to fight for control of their party in the 2020 elections.

A New York Times/Siena College survey in six key states also showed voters want a candidate who can work with Republicans.

Democrats in the country’s most pivotal general election battlegrounds prefer a moderate presidential nominee who would seek common ground with Republicans rather than pursue an ambitious, progressive agenda, according to a New York Times/Siena College poll of primary voters across six states.