The president rallied in Youngstown for Senator Jon Husted and Vivek Ramaswamy, who are in competitive contests against Democratic opponents.

© Kenny Holston/The New York Times

The candidates for Ohio governor have significant policy differences, but the campaign ads have been strikingly personal, with exaggerated portrayals of one candidate as a con artist and the other as a drunk.

© Jessica Phelps for The New York Times