The former President poked fun at the "birther" attacks he faced during his eight years in the White House as he stumped for a Democratic candidate.

During a Milwaukee rally, Obama criticized television advertisements against Barnes that said the candidate was a dangerous Democrat.

"I know that there are people in Wisconsin who think that because he's a Democrat with a funny name, he must not be like you," Obama said. We have seen this. Doesn't it sound like it's the same thing?

Get ready to pick up that birth certificate. He said to get ready.

Barnes wants to oust Ron Johnson, who was first elected in the conservative "Tea Party" wave in the first election of Obama's presidency, where the GOP won back control of the House.

Barnes would be the first black senator.

Before the 2012 presidential election, former President Donald Trump began floating the idea that Barack Obama was not an American citizen, an issue he used to catapult himself into national Republican politics.

—Acyn (@Acyn) October 29, 2022

While speaking at the Democratic get-out-the-vote rally, Obama said that the attacks against his citizenship don't compare to the conspiracy theories peddled by Trump and some conservatives.

It was the good old days. Do you remember when that was the craziest thing people said? obama asked the crowd Do you think about that? It was a long time ago. Everyone is amazed that that's some crazy stuff. It does not make the top 10 list of crazy.

The most recent polls show Johnson with a 3.4% lead over Barnes.

In the 2016 presidential election, Donald Trump defeated Hillary Clinton by less than one percent of the vote, and in the 2020 election, Joe Biden beat Trump by a similar margin.

Four years ago, Tony Evers defeated Scott Walker by 1.1 points.

Obama won the state in both 2008 and 2012