It's unclear if former Vice President Joe Biden understands how campaigning and elections work -- but someone needs to help him before things get even worse.

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In another example of why so many think he's unfit for office, Biden got so angry on Tuesday during a campaign stop in Iowa that he put his hands on a voter, was rude to him, and told him to go vote for someone else.

“I’m going to support you if you win the nomination because we got to get rid of Trump but what are we going to do about climate change?” the man asked Biden. “Now, you say you are against pipelines, but then you want to replace these gas lines, that’s not going to work.”

“No, no, no,'” Biden responded.

“We gotta stop building and replacing pipelines,” the man continued.

Biden put his hand on the man’s chest and pushed him away, telling the man, “go vote for someone else.”

“You’re not going to vote for me in the primary,” Biden said after the man appeared to express shock with his facial gestures.

“I’m going to vote for you in the general if you treat me right,” the man responded.

“Yeah, I know,” Biden responded. “Well, I’m not.”

Biden continued to get confrontational with the voter for several moments after the initial confrontation.

WATCH:

The voter later said that he supported Democrat presidential candidate Tom Steyer.

Soon after the clip of Biden berating the voter went viral, Steyer responded to the Biden’s actions and comments, saying, “Hi @JoeBiden, This is no way to treat an Iowan. He said he’d vote for the Dem in the general b/c he knows how important it is to beat Trump. We need immediate action on climate. If you don’t agree, happy to talk @ debate. But don’t take it out on voters we need to win in Nov.”

Seems like Biden can't get away from controversy since announcing his third run for the White House back in April.

This comes after Biden was brutally embarrassed by hundreds of his former coworkers who essentially begged him not to run for president.

As of now, 231 people who worked in Obama’s 2008 campaign, his 2012 re-election campaign and his administration have voiced their support for Sen. Elizabeth Warren’s bid for the White House.

The list of Obama alumni was acquired by CNN and is headed by the 2008 campaign’s field director, Jon Carson.

Unfortunately for Biden, reports have surfaced that Obama is working with Warren behind closed doors to strengthen her campaign.

And now, 231 former Obama staffers -- many of which undoubtedly crossed paths with Biden or worked with him in some capacity -- are throwing their full support behind Warren and not the former VP.

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Despite his work in the White House, it seems like almost no one from Team Obama is willing to support Joe.

Wonder why?