Hundreds of registered Republicans have switched parties or became independents in Central Florida in the week since the Jan. 6 assault on the Capitol by a pro-President Trump mob, elections supervisors say. The number is small compared with the tens of thousands of registered voters for each party. But even that amount of movement is unusual outside of any election or registration deadline, one elections expert said. “It’s probably very rare [to switch],” said Daniel A. Smith, the chair of political science at the University of Florida. “Generally, where we see the changes are from [having] no party affiliation to...