The first rule of guerrilla warfare is this: Never let your enemy know you are going to use guerrilla warfare.

Joe Biden, the former vice president and a 2020 presidential candidate, said publicly he’s not going to be as polite during the upcoming Democratic primary debate next week as he feels he was last time.

While Biden was speaking at a Detroit fundraiser on Wednesday, he told reporters — in regard to his exchange with Sen. Kamala Harris (D-Calif.) (shown above right) at the first round of debates a month ago — “I’m not going to be as polite this time … This is the same person who asked me to come to California and nominate her in her convention.”

Related: Biden Says He Regrets His ‘Nostalgic’ Words About Segregationist Lawmakers

Earlier in July, Biden suggested he has “all this information about other people’s pasts” — and would cash in on that if needed.

“If they want to argue about the past, I can do that,” Biden said at the fundraiser.

“I got a past I’m proud of. They got a past that’s not quite so good.”

It’s clear Biden is still steaming after Harris sabotaged him during last month’s debate.

Who do you think would win the Presidency?

By completing the poll, you agree to receive emails from LifeZette, occasional offers from our partners and that you've read and agree to our privacy policy and legal statement.

She brought up the subject of busing, how it affected her decades ago as a child, and how Biden could have made a difference if he had stood against California’s decision to proceed with the school action.

Related: Harris Pummels Biden on His Civil Rights Record

Biden still remains in front, as of now, for the Democratic 2020 nomination; no one else seems to be topping him.

Biden was pitching his health plan recently and he had the audacity to claim that his public option would not be a threat to private insurance.

He literally said, “If you like your plan, you can keep it!”

We have heard this lie before. We are not falling for it again.

Joe Biden will lose in a general election against Donald Trump. That’s a no-brainer.

Maybe he will let his plans against the president leak, too?

This piece originally appeared in The Political Insider and is used by permission.

Read more at ThePoliticalInsider.com:
Returns Are In: Mueller Hearing Nothing Short of a Disaster for Democrats
Ivanka Trump Is Slammed by Liberals for Giving Her Daughter a White Dog
Trump Administration Rule Proposal Will Cut 3 Million People Off Food Stamps

The opinions expressed by contributors and/or content partners are their own and do not necessarily reflect the views of LifeZette.