Dr. Annie Andrews, the Democratic challenger, accused Senator Darline Graham of taking her cues from President Trump. Ms. Graham said Dr. Andrews wouldn’t say no to socialists.

© Sean Rayford for The New York Times

Many say a vote in two weeks may be the most consequential in Israel’s history.

© Ohad Zwigenberg/Associated Press

Three months after a jarring summer candidate switch, some Democrats in the state are worried about the enthusiasm for their nominee, Troy Jackson, who is in a close race.

© Cj Gunther/Reuters

Republicans have dominated the center of the country for a quarter-century. Now they face several tough races for Senate and governor.

© Nick Oxford for The New York Times

A New York Times analysis of Senator Susan Collins’s voting record shows that she frequently breaks with Republicans but more seldom changes an outcome.

© Haiyun Jiang/The New York Times