Julia Letlow and former congressman John Fleming are poised to square off for the Republican runoff to win Louisiana's U.S. Senate seat.
The race chooses a successor to retiring Senator Bill Cassidy.
Letlow has the endorsement of former President Donald Trump.
Fleming says he is a opponent to the Trump‑backed candidate.
Voters have witnessed each candidates travel across the state.
The contest will reveal how much sway Trump still has with Louisiana GOP voters.
The runoff will choose who will occupy in the Senate next.