In a statement on his website, he said he was running with the goal of improving how Washington handles spending and "fixing" the Affordable Care Act.
"As the primary process gets underway for both parties, we look forward to contrasting our fresh, bold Republican vision for the future with the Democrats' retread message of the job killing policies of Pelosi and Schumer". "We've seen what's happened in other races".
"I love the people of our state of Tennessee, and we need and deserve something better than we're getting in Washington", the former Nashville mayor said in a new video.
On Wednesday, U.S. Congressman Marsha Blackburn released a statement surrounding unconfirmed reports of Bredesen's run, calling his views "out-of-touch with Tennessee values". Corker has announced that he does not plan to run for re-election in 2018 after a series of high-profile spats with President Donald Trump.
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Bredesen, who served two terms as governor from 2003 to 2011, formally announced earlier today in a 2-minute video that he is seeking the seat being vacated by incumbent U.S. Sen.
Bredesen ran as a moderate Democrat in his first gubernatorial race, and his successful reputation as Nashville mayor and business background allowed him to run with unusual strength in heavily Republican areas of the state.
But Bredesen's entry in the Volunteer State gives the party another pick-up opportunity along with Arizona, where GOP Sen.
Sen. Bob Corker's (R-TN) decision to retire has created a slim opening for Democrats in the state.