GOP Sen. Bill Cassidy's primary loss in Louisiana shows the power of President Trump's opposition. It also highlights the importance of voting rules and maps.

Source: Election results and race calls are from The Associated Press. County type designations are based on a New York Times ...

Source: Election results are from The Associated Press. County type designations are based on a New York Times analysis of data from the Census, the National Center for Health Statistics, and other ...

Incumbent Sen. Bill Cassidy lost the GOP Senate primary in Louisiana to a Trump-backed candidate after voting against Trump ...

Despite outspending his rivals, Cassidy finished third in the primary, falling short of even making a runoff. The outcome was ...

Plus, extremist settlers eye more Gaza settlements, and former FBI Director James Comey opens up on the justice system.

Sen. Bill Cassidy was decisively defeated in Louisiana’s Republican primary Saturday, failing to overcome backlash from GOP ...

The president's push to oust Republican lawmakers who have crossed him claimed its most prominent name yet in Louisiana this weekend, retiring Sen. Bill Cassidy.