I think some of the reasons why President George W. Bush did so well in Florida is, along with the increase of his support among local Hispanic voters, an increase of his support among FL's Jewish voters who represented 5 % of the FL electorate in 2004 after they massively backed Al Gore in 2000. In fact, Dubya won 20 % of FL's Jewish voters and here's how I guess he managed to do so.
Kerry flip-flopped on the Israel Security Fence, calling it a barrier to peace before he called the fence "a legitimate act of self-defense," and saying George W. Bush "is rightly discussing with Israel the exact route of the fence to minimize the hardship it causes innocent Palestinians."
https://www.cbsnews.com/news/kerrys-top-ten-flip-flops/Before the 2004 election, Israel also faced multiple suicide bomb attacks whom sponsors and parts were generated by Saddam Hussein's Iraq who paid $25000 to the families of suicide bombers. And the Republicans attributed the reduction of suicide bomb attacks in Israel to the Iraq War.
https://www.debates.org/voter-education/debate-transcripts/october-5-2004-transcript/And as Zell Miller noted in his Keynote Speech at the 2004 Republican National Convention, John Kerry opposed the Patriot Missile that was crucial in shutting down Saddam Hussein's Scud missiles over Israel.
https://www.cbsnews.com/news/text-of-zell-millers-rnc-speech/As a result, I guess Jewish voters, especially those in FL, saw George W. Bush as the better choice to keep America safe in War on Terror and to stand up for Israel, which might have resulted in George W. Bush winning FL so comfortably by 5 percentage points
