Democratic legal teams kicked into action Thursday in Florida, demanding a recount they insist will ultimately declare Democratic Sen. Bill Nelson the winner and with defeated Democratic gubernatorial candidate Andrew Gillum hedging his concession. Mr. Nelson had already signaled his intention to fight the results, but Mr. Gillum’s surprise announcement further roils the electoral waters in the Sunshine State. Republican former Rep. Ron DeSantis, a strong ally of President Trump, beat Mr. Gillum, the left-wing mayor of Tallahassee, in the unofficial results and Mr. Gillum conceded shortly before midnight last Tuesday. But in a brief statement Thursday, he appeared to...