There are lagging indicators and leading indicators in presidential races.
Public-opinion surveys, like Gallup's daily tracking polls, are the former. They measure support after an event. And they suggest President Obama is picking up steam nationally from the just-ended Democratic National Convention.
Some leading indicators: big crowds at Obama's rallies from Tampa to Melbourne, people singing Al Green's "Let's Stay Together" before his West Palm Beach event Sunday, or the giant bear hug the president was given earlier by Scott Van Duzer, a Republican who voted for Obama in 2008 and the owner of Big Apple Pizza and Pasta Restaurant in Fort Pierce.
Put it all together and it looks like there's an increase in enthusiasm for Obama that's visible in Florida.
However, all these positive signs for Obama are just indicators. And the Obama campaign has helped orchestrate all of this, right down to the unscheduled stop at the restaurant from Van Duzer, who said he received permission from the Secret Service to lift up the president. There's definitely some campaign showmanship going on. But that, too, is an indicator that Obama has his act together in Florida, where the campaign has thousands of volunteers and nearly 100 field offices in each of the 67 counties.