Alvin Brown -- a fellow Democrat and mayor of the largest city in the U.S. -- isn't endorsing any candidates in the presidential race.

So, is the Obama Campaign hurting for Brown's backing?

"He's not going to endorse in any political campaign, from the president all the way on down to the local races. And we understand he wants to focus on doing his job and being the best mayor and we're fine with that," says Obama Campaign Manager Jim Messina.

Even as a past aide to President Bill Clinton, Mayor Brown says he's not jumping into the middle of anyone's partisan campaign, including Mitt Romney. Messina says their bigger concern is how Florida's new voting laws are making it harder for some people to vote.

"It's frustrating. I think just as Americans, put aside our party labels just for a second, what we should all want to do is have more people vote," says Messina.

Obama comes back to Florida on Thursday, with a campaign stop in Orlando.