Rep. Julia Letlow and Jamie Davis head to final round for U.S. Senate

Rep. Julia Letlow and Jamie Davis will face off this fall for Bill Cassidy's U.S. Senate seat.

Why it matters: Letlow, who is favored to win November's general election, managed to fend off a surge of support for fellow Republican competitor State Treasurer John Fleming in Saturday's primary runoff.

Catch up quick: Party primaries in May ended with 45% of the vote for Letlow and 28% for Fleming, according to secretary of state data. That vote knocked Cassidy out of the race and seemed to set Letlow up for an easy victory.

But Fleming's supporters rallied to give Letlow a tighter-than-expected race. She ended Saturday's primary runoff with 57% of the vote to Fleming's 43%, according to secretary of state data.

Between the lines: President Trump, who endorsed Letlow in January, spent the campaign's final days aiming to energize Louisiana voters on her behalf, including with last-minute text messages and another endorsement.

Letlow thanked Trump at her election night party in Baton Rouge, the AP reports, calling him "the greatest president this country has ever had."

The intrigue: There are several months to go until November's general election, but Democrats don't anticipate flipping the Senate seat, the AP has reported.

Some New Orleans-area voters also made decisions on two other Republican primaries, sending additional candidates to November's general election:

State Rep. Stephanie Hilferty will vie for the Public Service Commission District 1 seat, along with Democrat Connie Norris and Chris Justin, a no-party candidate, The Times-Picayune reports.

Joseph Cao takes aim at the Board of Elementary and Secondary Education District 1 seat. Democrat Angela Hershey, who secured her party nomination unopposed, according to the Louisiana Illuminator, will also be on the ballot.

What's next: The general election is slated for Nov. 3, and it'll include open primaries for the delayed U.S. House race.

Early voting begins Oct. 20.