This year's congressional redistricting had led to some speculation that Tracy or others might challenge incumbent Republican Rep. Scott DesJarlais for the party nomination.
But Tracy released this statement on his Facebook page Monday morning:
"I will not be a candidate for Congress in 2012. I plan on running for re-election to the State Senate.
"I am excited about the new 14th State Senate District. I am honored to continue to represent the constituents of Rutherford, Bedford, and Moore Counties and I look forward to having the opportunity to represent new constituents in Lincoln and Marshall Counties. I am committed to continuing my work on state issues to make Tennessee a better place to work and live, especially in the areas of job creation, education and transportation.
"In making this decision, I do want to thank those who have called or sent notes regarding the congressional district. I am very thankful and humbled for the tremendous support I have received throughout Middle Tennessee both in 2010 and now."
The statement was sent to the news media later in the morning as a news release. Tracy also linked to the Facebook post through his Twitter account.
The proposed legislative redistricting announced last week by the Republican majority of the state legislature would move Bedford County, and thus Tracy's residence, from the 4th District, currently represented by Rep. Diane Black of Gallatin, into the 6th District, currently represented by DesJarlais.
Tracy ran for the open 6th District seat in 2010, coming in third after Black and Murfreesboro businesswoman Lou Ann Zelenik in the Republican primary. The three candidates were separated by just 566 votes.
Zelenik said she is still weighing her options on another run, while Republican state Sen. Bill Ketron of Murfreesboro is also considering a bid. Rutherford County is also being moved from the 6th District into the 4th under the proposed maps, which (like the changes to Tracy's state Senate district) must still be approved by the state legislature.
DesJarlais has reported nearly $437,000 on hand for his re-election campaign.
Tracy chairs the Senate Transportation Committee, is vice-chair of the State and Local Government Committee and a member of the Education Committee and the Commerce Committee.