WATCH: Obama to Campaign With Kamala Harris in Swing States

One day after Liz Cheney endorsed Vice President Kamala Harris at the birthplace of the Republican Party in Wisconsin, former President Barack Obama announced he'll be hitting the campaign trail along with the VP in key swing states next week.

President Obama and Vice President Harris have enjoyed a long friendship for 20 years, dating back to when they first met during his Senate campaign in the early 2000s.

Obama's presence on the campaign trail will bring additional star power to a ticket that's been consistently gaining in the polls while garnering an impressive list of endorsements from high-powered Democrats and Republicans alike.

He also brings his own eight years of White House experience and understands the job better than any other surrogate for VP Harris aside from President Joe Biden. Former First Lady Michelle Obama, who remains just as popular as her husband, is also expected to make a few appearances as well.

President Obama’s speech at the Democratic National Convention in August was a memorable one, making fun of Donald Trump's obsession with crowd size and making a stark contrast between Trump and Vice President Harris. “She wasn’t born into privilege," President Obama told the crowd. "She had to work for what she’s got. And she actually cares about what other people are going through."

Expect even larger crowds than usual when President Obama, who raised $4 million for the campaign at a star-studded solo fundraiser in Los Angeles last month, joins Vice President Harris in Pittsburgh next Thursday, October 10th.