Biden and Obama need to marketing campaign collectively throughout the midterm elections

U.S. President Joe Biden stands with former President Barack Obama during an event on the Affordable Care Act, the former president’s greatest legislative achievement, in the East Room of the White House in Washington, the United States, April 5, 2022.

Leah Millis | Reuters

President Joe Biden and former President Barack Obama will campaign together on Saturday for the first time since Biden took office.

The former president-vice president couple will reunite in Philadelphia in a last-minute attempt to motivate voters in the swing state ahead of Tuesday’s midterm elections. Democratic Senate hopeful John Fetterman and gubernatorial candidate Josh Shapiro will join the presidents at the event.

Former President Donald Trump is also campaigning in Pennsylvania on Saturday in Latrobe outside of Pittsburgh. Trump has endorsed famed physician and Republican Senate nominee Mehmet Oz, as well as Republican nominee Doug Mastriano for governor.

One of Pennsylvania’s incumbent senators, GOP Sen. Pat Toomey, is retiring, meaning the state could determine which party controls the currently 50-50 Senate. Whether Democrats or Republicans control the Senate will likely determine Biden’s ability to execute on his agenda over the next two years.

Polls show a close race between Senate candidates Oz and Fetterman.

In their only debate in Harrisburg, Pennsylvania, Senate candidates asked questions about abortion rights, raising the minimum wage, gun reform and fracking. Each candidate accused the other of lying and did not hesitate to attack the opponent’s private life.

Oz beat Fetterman in the polls while Fetterman was recovering from a debilitating stroke in May that sidelined him for three months. Oz’s campaign launched attacks on Fetterman’s health and questioned whether he was physically fit to take office. Fetterman’s GP wrote that the candidate “has no work restrictions and is able to serve full time in public office,” while noting that he had persistent auditory processing problems.

In turn, Fetterman’s campaign has branded Oz, a wealthy television star, as an aloof New Jersey carpet digger who made his fortune by presenting sometimes dubious health information to his audience.

—CNBC’s Kevin Breuninger contributed to this report.