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Republican St. Tammany Parish Councilwoman Kathy Seiden is likely to challenge incumbent GOP Sen. Bill Cassidy in the 2026 U.S. Senate race.

Seiden has hired a Donald Trump-affiliated pollster to test the waters for her.

Cassidy is seen as vulnerable due to his vote to convict Donald Trump in the 2021 impeachment trial.

Several other Republicans have already announced their candidacy, emphasizing their pro-Trump stances.

Republican St. Tammany Parish Councilwoman Kathy Seiden is poised to be the first woman in the 2026 U.S. Senate race to challenge incumbent GOP Sen. Bill Cassidy, having commissioned Trump-affiliated pollster Adam Geller to test the waters.

Seiden confirmed that Geller's National Research firm is polling the race for her.

"We've been encouraged b

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