While high winds and rain could disrupt next week's Republican National Convention in Tampa, Fla., Democrats will try to manufacture some of their own thunder by campaigning through it.
It's a contrast to bygone days when one party's candidates would lie low during the other's convention.
Meteorologists and Republican leaders were anxiously eyeing Tropical Storm Isaac as it churned through the Caribbean Thursday heading toward Cuba. If it strengthens and tracks northwest, it could threaten Florida's Gulf Coast by Monday.
Mitt Romney and running mate Paul Ryan were doing some final pre-convention campaigning in battleground states.
Romney stumped in New Mexico, and Ryan told a business roundtable in Fayetteville, N.C., that the two would work if elected to block threatened military cuts.
"Don't question our resolve," Ryan said.
President Barack Obama and Vice President Joe Biden remained in Washington with no scheduled campaign events. But Obama will campaign next Tuesday and Wednesday in Iowa, Colorado and Virginia.
Biden will be in Florida Monday and Tuesday, including a Tampa stop. Michelle Obama will appear on David Letterman's CBS show Wednesday night.
The Democratic campaign also is airing a TV ad starring former President Bill Clinton. And Obama Thursday sent supporters an email soliciting at least $5, noting "75 days from now, I'll either be looking at another four years in the White House — or the end of this opportunity."
While Florida is frequently hit by hurricanes and is a major convention destination, it's been 40 years since either party held a nominating convention there. In the summer of 1972, both did — in Miami Beach.
Republicans renominated President Richard Nixon and Vice President Spiro Agnew, while Democrats picked George McGovern and Thomas Eagleton.
Despite political storms later that year, neither convention was threatened by a hurricane.
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