According to one poll, Joe Biden has an almost insurmountable lead over every other Democratic challenger, of 14 points over second-place Bernie. Another poll gives him a 24 point lead.
It's possible that these polls are accurate. It's also possible that they are predictive.
But I wouldn't count on it.

The Democratic frontrunner in April 2007: Hillary Clinton. In April 2003: Joe Lieberman. In April 1991: Jesse Jackson. In April 1987: Gary Hart. In April 1983: Walter Mondale (ok, that one worked out). In April 1975: Ted Kennedy. In April 1971: Edmund Muskie.

There is no way, NO WAY, on Gawd's Green Earth that I would ever vote for Biden.
I would sooner chew my hand off. I would sooner vote for f*cking Trump. Seriously. I would vote for Trump over Biden, and I think Trump is the worst president this country has ever seen.

What presidential campaign is Biden's most like?

Trump’s attack on Biden will strengthen Biden amongst Dems.

— Neera Tanden (@neeratanden) April 4, 2019

The establishment loves Joe Biden, but then the same people that love Biden also loved Hillary, and were confident that she could beat Trump.

The Democratic establishment has decided that all that they need is a more likeable candidate.
Biden is more favorable with the public than Hillary right now, but then Hillary's favorability was much higher before she kicked off her campaign. When people learn about his Hillaryesque voting record his ratings will drop.

Iraq War supporter? Check. Clinton was pilloried by the left and the right alike as a wild-eyed hawk; her vote in favor of the Iraq invasion haunted both her 2008 and 2016 campaigns.
...Let’s be clear: If he runs, Biden will be the only candidate — out of up to 20 Democrats running for the nomination — to have voted for the Iraq War.

Friend of Wall Street? Check. Clinton had a Goldman Sachs problem; Biden has an MBNA problem. Headquartered in his home state of Delaware, the credit card giant MBNA was his biggest donor when he served in the Senate. In 2005, Biden threw his weight behind a bankruptcy bill, signed into law by President George W. Bush, that shamefully protected credit card companies at the expense of borrowers.

Champion of mass incarceration? Check. Clinton took flak for supporting the 1994 crime bill, which helped push up the U.S. prison population, introduced new federal death penalty crimes, and hugely exacerbated racial disparities in the criminal justice system. And Biden? Well, he wrote the damn thing!

Establishment-friendly? Check. Biden arrived in D.C. in 1973; he spent 36 years in the Senate and eight years in Obama’s cabinet.
When Trump tries to run again as an anti-establishment outsider in 2020, what will Biden’s response be?

Loser? Check. Clinton won the Democratic nomination in 2016, at the second attempt, having been defeated by Obama eight years earlier. For Biden, it would have to be third-time lucky.

And I'm going to just skip over Biden's history of mild misogyny and racism. We'll be hearing about that endlessly.

Like with Russiagate, the Democratic establishment is in deep denial.

Voters want change, and Joe Biden is most certainly not that. He’s an attempt to return the country to a pre-Trump era and pretend that 2016 never happened.

The bigger question is what would a Biden presidency look like?

So a Biden presidency means a less-articulate Obama, a president that oversaw the nationwide destruction of the Democratic party.

Except that it's even worse than that.
Biden may be like Hillary and Obama, but who he's most similar to is the guy that Dem voters most want to defeat - President Donald Trump.

Despite the outrage directed by liberals and others at Trump’s racism, Biden is far from his polar opposite. On the contrary, he shares several of the president’s blemishes. Perhaps that’s the point — polling indicates that ousting Trump is the Democrats’ top priority, even more so than supporting a candidate who shares their values. Still, it’s ironic that, if Biden runs and his current polling lead holds, the Democrats would nominate a man who is, of all their available options, arguably the most similar to the president they’re seeking to depose.