Trump appointments set off special elections to fill House seats: What to know

The move by President-elect Trump to tap several House Republicans to fill positions in his Cabinet and beyond has set off a fresh round of special elections next year to replace them. Trump chose Reps. Mike Waltz (R-Fla.) and Elise Stefanik (R-N.Y.) to be his national security adviser and U.S. ambassador to the United Nations,...