PORTSMOUTH, New Hampshire — US President Barack Obama joked Friday that he should appoint Bill Clinton as his "Secretary of Explaining Stuff" following his acclaimed speech at the Democratic convention.

Clinton is expected to follow his address, which even some Republicans admitted was a masterful summary of the election arguments and Obama's presidency, with appearances for Obama in crucial battleground states.

"President Clinton made the case in the way only he can. You know, somebody -- somebody emailed me after his speech and said,'You need to appoint him secretary of explaining stuff,'" Obama joked in New Hampshire.

"That was pretty good. I like that. Secretary of Explaining Stuff."

Obama's spokeswoman Jen Psaki told reporters aboard Air Force One Friday that the campaign would be keen to have Clinton's help again on the campaign trail ahead of the November 6 election clash with Mitt Romney.

"We'd love to have him out there as much as he is available," Psaki said.

"He's been an incredible advocate for the president for quite some time," Psaki said.

Clinton told Americans at the convention in North Carolina on Wednesday that Obama had placed them on a path to renewed prosperity and deserved four more years to finish the job.

Lending his signature dazzle to Obama's re-election campaign, the two-term former president told the Democratic convention that he believed "with all my heart" that the 44th president had led a remarkable, if incomplete, recovery.

"No president -- not me or any of my predecessors -- no one could have fully repaired all the damage he found in just four years," Clinton said.

"He has laid the foundations for a new, modern successful economy of shared prosperity, and if you will renew the president's contract, you will feel it. You will feel it."