James Mackler | Nashville Public Radio

James Mackler

Screenshot of TeamHagerty.com

Former U.S. Ambassador Bill Hagerty officially launched his bid for U.S. Senate Monday, confirming a campaign that he'd been keeping quiet about despite President Donald Trump's announcing it for him in a tweet in July.

Hagerty, a longtime ally of Utah Sen. Mitt Romney and Tennessee's economic and community development commissioner under Gov. Bill Haslam, immediately moved to nationalize the race.

TN Photo Services

The open U.S. Senate race in Tennessee just got interesting.

Former Gov. Bill Haslam decided he will not run, opening the door for other Republicans who may have been holding back. And the next day, President Donald Trump tweeted that the U.S. ambassador to Japan, Tennessee's Bill Hagerty, is getting into the race.

Chas Sisk / WPLN

U.S. Representative Marsha Blackburn says the Senate is slowing down President Trump's agenda.

Her remarks come amid an ongoing dispute between Trump and Bob Corker. And while she's declining to call out Tennessee's current senator, she's making it clear she wants them to move on.

Chas Sisk / WPLN (File photo)

Tennessee Senator Bob Corker has his first Republican challenger next year — if he decides to seek re-election.

Conservative activist Andrew Ogles announced Thursday that he's running for the seat, which Corker has held since 2007. Others might not be far behind.