Not since the days of Huey Long has a Louisiana governor helped try to unseat a U.S. senator of the same party.

A Louisiana Republican Senate primary poll shows Treasurer John Fleming, Rep. Julia Letlow and incumbent Sen. Bill Cassidy in ...

Columnists Stephanie Grace, Quin Hillyer and Ron Faucheux on where things stand as Louisiana’s big Republican Senate primary ...

Republican Sen. Bill Cassidy of Louisana is downplaying the impact of President Donald Trump backing a GOP challenger as the two-term senator seeks reelection.

Louisiana Governor Jeff Landry makes endorsement as Sen. Bill Cassidy and Rep. Julia Letlow qualify for heated Senate party ...

President Donald Trump delivered his State of the Union address Tuesday night. Now, neighbors are reacting. Hear from one Louisiana lawmaker on his response.

Add Yahoo as a preferred source to see more of our stories on Google. Louisiana state Rep. Julie Emerson (R) announced Thursday she was dropping her primary challenge against Sen. Bill Cassidy (R-La.) ...

The three top Republican candidates are battling to portray their opponents as liberals and themselves as the “true conservative.” ...

Senator Bill Cassidy secured nearly $400 million for Louisiana to improve roads and bridges, enhance flood protection, and ...

Sen. Cassidy will face his Republican challengers in a closed-party primary in May ...

Cassidy brushed aside Trump’s support for a GOP challenger, casting the race as a measure of his own support at home as ...