Trump-Massie Showdown Comes to a Head in Kentucky Primary Race

Cassidy, a physician by trade, had attempted to make nice with Trump after he voted to convict the president in 2021 by supporting the confirmation of Robert F. Kennedy Jr. as Health and Human Services Secretary.

Meanwhile, some of Tuesday's most high-profile primary ballot box face-offs will serve as the latest tests of President Donald Trump's immense grip over the Republican Party and the strength of his endorsements in GOP nomination races.

Six states vote in primaries today, with a mix of safe races, competitive battlegrounds and quieter contests where the real action is downballot.

Police are investigating a deadly shooting at the Islamic Center of San Diego as a hate crime, after three people were killed and two dead suspects were identified near the scene.