While exact numbers are hard to come by, census estimates and political studies peg the diverse Black community — nicknamed the Caribbean Massive by some — at more than 2.5 million, including hundreds of thousands of Florida voters. That’s crucial in a battleground state where elections are often decided by less than a percentage point.

For a campaign that’s been dogged by questions of lackluster enthusiasm since Biden declared his candidacy 16 months ago, the electricity sparked by the Harris pick has produced tangible results. The campaign reported raising a record $48 million in 48 hours. Pollsters logged an uptick of support for Biden, who was already leading Donald Trump — including in the president’s must-win state.

“It’s the pick that’s going to energize us. It’s the pick that’s getting us motivated,” said Karen Andre, one of Biden’s top advisers in Florida who’s of Haitian-American descent. She said the campaign plans “a full 360 degree effort” to engage Caribbean-American voters, including with paid radio ads in Creole and English and possible interviews with Harris with local hosts who have audiences with roots in the West Indies.