Biden surges in primary polls

Former Vice President Joe BidenJoe BidenJames Carville: Biden represents 'stability' not 'generational change' Trump's misspelling of Biden's name trends on Twitter Trump says 'I have confidence' after past North Korea missile tests MORE has surged in the polls since launching his bid for the Democratic presidential nomination, opening up a double-digit lead over the rest of the field in two new national surveys.

A CNN poll released Tuesday found Biden jumping 11 points to 39 percent support, a 24-point lead over Sen. Bernie SandersBernie SandersJames Carville: Biden represents 'stability' not 'generational change' Ocasio-Cortez, progressives trash 'antisemitic' Politico illustration of Bernie Sanders 2020 Democrats target federal ban on abortion funding MORE (I-Vt.), who is at 15 percent support. No other candidate in the race has double-digit backing from respondents.

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And a Morning Consult survey released Tuesday found Biden with 36 percent support, followed by Sanders at 22 percent. That’s a 6-point bounce for Biden from the same survey released earlier this month, while Sanders has fallen by 2 points. No other candidate reaches double-digit support in the Morning Consult poll, either.

Biden’s polling strength also extends to the first-in-the-nation primary state of New Hampshire.

A Suffolk University survey released Tuesday found the former Delaware senator in the lead in New Hampshire with 20 percent support, followed by Sanders and South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegButtigieg defends Kaepernick, NFL players who kneel during national anthem Journalism is now opinion-based — not news-based Buttiegieg backs NFL players' right to protest during anthem: I 'put my life on the line to defend' that MORE at 12 percent. Sen. Elizabeth WarrenElizabeth Ann WarrenTrump defense pick expected to face tense confirmation 2020 Democrats target federal ban on abortion funding Gillibrand seizes on abortion debate to jump-start campaign MORE (D-Mass.) is in fourth place at 8 percent.

If Biden were to win New Hampshire it would be a massive blow to Sanders and Warren, who come from nearby states and are seen as having a home-field advantage in the Northeast.

Biden’s strength in the polls is driven by his broad support from African Americans. Biden has 43 percent support from black voters, according to Morning Consult. Sanders is at 20 percent here, followed by Sen. Kamala HarrisKamala Devi HarrisSan Francisco police chief apologizes for raid on journalist's home Gillibrand seizes on abortion debate to jump-start campaign Senate Democrats to House: Tamp down the impeachment talk MORE (D-Calif.) at 10 percent.

The same holds true in the CNN poll, with Biden hitting 50 percent among nonwhite voters. Sanders is a distant second at 14 percent, and no other candidate is in double-digits.

With Biden emerging as the clear early front-runner, the Democrats lagging behind are increasingly taking shots at him and his decades-long voting record.

Sanders went after Biden with his most direct attacks yet on Monday night on CNN’s “Anderson Cooper 360.”

"I helped lead the fight against NAFTA [the North American Free Trade Agreement], [Biden] voted for NAFTA. I helped lead the fight against China [on trade], he voted for it. I strongly opposed [the Trans-Pacific Partnership], he supported it. I voted against the war in Iraq, he voted for it,” Sanders said.

President TrumpDonald John TrumpPapadopoulos on AG's new powers: 'Trump is now on the offense' Pelosi uses Trump to her advantage Mike Pence delivers West Point commencement address MORE also unloaded on Biden with a series of Twitter attacks, suggesting the president and his political team view the former vice president as a formidable challenger.

The attacks from the White House further help Biden separate himself from the pack of Democrats behind him, setting up an early one-on-one with the president that sets Biden above the fray.

Biden has sought to draw early contrasts between himself and Trump, opening his launch speech by attacking the president’s response to the 2017 white supremacist rally in Charlottesville, Va.

On Monday, Biden rallied union workers at a campaign event in Pennsylvania, a state Trump turned red in the last election for the first time since 1988.

“I'm sick of this President badmouthing unions,” Biden tweeted. “Labor built the middle class in this country … we need a president who honors them and their work.”