Victory has a thousand fathers. And Democrats everywhere are clamoring for a piece of this midterm triumph.

© Zbigniew Bzdak for The New York Times

Several current and former law enforcement officials said an Obama-era investigation found some evidence that Ms. Omar had entered into a sham marriage with a man suspected of being her brother.

© Tierney L. Cross/The New York Times

The former president will rally in Atlanta for Senator Jon Ossoff, who is seeking re-election, and Keisha Lance Bottoms, a candidate for governor.

© Nick Hagen for The New York Times

Former President Barack Obama had cast his successor as out of touch while jabbing at his extravagant sense of style. Mr. Trump responded at length.

© Doug Mills/The New York Times