Part of that was because of a drop in Democratic support among Latino voters. In 2016, 62 percent of Florida’s Latino voters broke for Mrs. Clinton, according to exit polls; two years later, just 54 percent voted for the Democratic governor and Senate candidates.
Mr. Trump has worked to strengthen his support among Cuban-Americans in particular, and his claims that Democrats are flirting with socialism may carry a particular resonance with these voters, many of whom belong to families that fled the Castro regime. But it was not only among Cuban Latinos that Democrats’ margins suffered…