(CNN) - Time - and apparently campaign money - can heal old wounds.
Two Democratic officials confirm President Obama is headed to Philadelphia on September 20 to host a fundraiser for the Senate campaign of Democrat Rep. Joe Sestak, who survived a nasty primary battle that featured Obama backing incumbent Sen. Arlen Specter (D) over the Congressman.
Top White House officials, including Chief of Staff Rahm Emanuel, were enmeshed in a huge controversy over whether they used former President Bill Clinton to dangle before Sestak an advisory job in the executive branch in exchange for him dropping out of the primary contest.
The Congressman refused the offer while White House officials have denied that any laws or ethical regulations were breached, and Sestak's campaign staff now says it's time for Democrats to put everything behind them.
"We're honored that the President would do an event with Joe during his trip to Pennsylvania," Sestak spokesman Jonathon Dworkin told CNN. "He and Joe may have had their differences, but they can agree that it is critical to elect a Senator who will put Pennsylvania's working families first."
Sestak needs as much help as he can get right now because recent polls show him trailing Republican nominee Pat Toomey, though a significant portion of the Pennsylvania electorate appears to still be undecided.
A recent poll by Ipsos/Reuters poll found Toomey up double digits, 47 percent to 37 percent, with 15 percent undecided. Meanwhile, a Franklin and Marshall College poll found Toomey leading 40 percent to 31 percent, but there was a whopping 26 percent undecided.
That may be one reason why Sestak officials have also been lobbying White House official to send the extremely popular First Lady Michelle Obama to Pennsylvania for a separate visit, according to Democratic officials.