“It is clear that we have lost these elections,” Aleksandar Vucic said in a surprisingly early speech congratulating his opponents.

On the trail, James Talarico, the Democratic Senate nominee, has increasingly gone after Mr. Musk, a critic of his who has given big to a group aligned with the Republican candidate, Ken Paxton.

The Venezuelan opposition leader returned home from exile to a country firmly under American control. How are her relations with Washington?