It’s been a long final swing of the presidential campaign,and everyone – from the candidate down – is exhausted. In Barack Obama’s forward cabin on his plane, the lights are frequently turned off during afternoon and evening flights, to allow him to sleep.

But even on the morning of the last full day of the election, the fatigue creeps in.

In Jacksonville, Florida, Obama started his final stop to this critical state – the one battleground that troubles Obama’s senior aides more than any other – with yet another arena rally.

Although the arena was only two-thirds full, the crowd was boisterous. When one group of supporters shouted to him about having voted early, Obama said, “Thank you for your vote!” The cluster of fans went wild.“All right y’all,” he said. “Settle down.”

Maybe Obama was too calm for his own good. “After 21 months and three debates, John McCain still has still not been able to tell you, the American people, a single major thing he’d do differently from George Bush when it comes to the economy,” he began on a familiar riff.

“The Republicans are spending a lot of money on ads here in Ohio. But if you watch those ads, you don’t know…”

At which point, the crowd in Florida started booing loudly enough to stop him mid-flow.

“Florida,” he corrected himself. “I’ve been traveling too much. They’ve been spending a lot of money in Ohio too!”

And just to prove that he knew where he was – that this wasn’t a Bob Dole moment – Obama threw in a quick reference to the city too.“And let me tell you Jacksonville, you have to ask yourself is there one different thing that you’ve heard in these ads, that would tell you what he’d do for the economy in the future?”

Obama’s aides must be relieved their candidate is only campaigning in three states today – not McCain’s seven – before returning home to Chicago.