New Jersey Gov. Chris Christie might be at the top of most veepstakes lists, but it won't be Mitt Romney with whom he's appearing today. Instead, he will tour One World Trade Center this afternoon with Romney's rival, President Obama.

It might be quite the awkward meeting. The tough-talking Republican governor last week railed against Obama at the Conservative Political Action Conference in Chicago. Christie hit Obama for his comments Friday that the "private sector is doing fine" and it's local government hiring that's slowing the economy. The president later clarified his comments, explaining the economy is "not doing fine."

In front of a cheering crowd, he said the statements show "the core difference between who we are and what he represents for America."

"I remind my staff of this every day, and I want to remind you all today, the most powerful thing on our side is this: We're right and they're wrong," Christie said. "So let's not make it any more complicated."

Obama and Christie toured flood-ravaged parts of New Jersey together in September and if Christie, who has topped his personal favorability ratings in his state, is picked to be Romney's running mate, today's video of their meeting will definitely be broadcast over and over again.

The attacks of Sept. 11do transcend politics, but all eyes will be on how the two interact in this heated partisan atmosphere. Christie does have a history of working with Democrats, at times. He's fighting with his Democratic state legislature right now, but he has a good relationship with Newark Mayor Democrat Cory Booker, as well as his state's Senate president, also a Democrat. Christie and Booker filmed a spoof video together last month making fun of the possibility that Christie would join Romney's ticket.

New York Gov. Andrew Cuomo and New York City Mayor Michael Bloomberg will also be on hand for the tour today. Booker will actually be with the president this evening for a fundraiser at the Plaza Hotel.

Obama will also be fundraising at the home of Sarah Jessica Parker this evening. This event was highly publicized and involved a sweepstakes for low-dollar donors to win a ticket to the pricey event.