Who will win Florida?

>> president obama 's whirlwind battleground blitz continues. he was in tampa, florida , last hour.

>> and if you're willing to work with me and knock on some doors with me, make some phone calls with me, vote for me, we'll win in county again, we'll win florida again and we'll win this election again.

>>> richard hughey is here with a look at the closer fight for florida and there's none bigger. 29 electoral votes .

>> big, big, here, chris. it has more say in who becomes president than ever before and it's no doubt that florida has led for most of the election and activity on the ground, as well. the obama campaign has visited 46 times since june according to the washington post , the first lady a big part of that. field offices continue to grow there, now 104. the romney campaign has made 52 visits and ann romney has made a dozen of those, but his field offices are half obama 's at 48. here's how it works on a path to victory based on the the toss-up state map. if romney wins florida , he doesn't need ohio, new hampshire or iowa to reach 270 to win. for obama it's much simpler, winning florida means winning the election. florida is like four states in one. central florida with four key swing counties along i-4 will probably be the decider this year. palm beach counties expected to go obama and miami-dade with strong cuban-american influence traditionally has gone red. balancing that out what's called the president's latino fire wall with almost 1 in 4 being latino and a recent poll shows they're more enthusiast nick that election and that's 61% of latinos compared to 71 nationally according to latino decisions, but including all groups here, romney is slightly ahead and the real clear average he's ahead by two percentage points and the first debate in the beginning of october and as tim russert told us, down to the wire, it's florida , florida , florida .

>> and obviously, the ground game is so important that partly because of that big latino population, big push for voter registration . where does it stand?

>> up to july, the year up to july, democrats were behind by 10 to 1 in increasing their voter registration roles compared to last election, but now that we have all of the numbers and almost all of them, 500,000 more democrats are registered than republicans.