(CNN) – Democratic Rep. Brad Miller of North Carolina announced Thursday he won't seek re-election to the U.S. House of Representatives.
The five-term congressman represents the state's 13th Congressional District, which was split up six ways in a recent redistricting process.
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Faced with a new map that now pits him against Rep. David Price, Miller said he wouldn't try to challenge the longtime Democratic incumbent.
Miller acknowledged he would be the underdog in a Democratic primary fight against Price, who already represents parts of the new district.
"I have begun campaigns in the past as the underdog, and campaigned with great energy, enthusiasm and joy," Miller said in a statement. "There would be no joy in the campaign."
Saying he and Price "have generally been friends and allies in the past," Miller conceded the two have "important differences."
Miller has been an active advocate for financial reform and introduced legislation that was later included in the financial reform bill signed by President Barack Obama in 2010.
"I will continue those fights for the next eleven months, and I hope beyond," Miller said.
Miller's announcement came the same day North Carolina Gov. Bev Perdue, a Democrat, also made her decision against a re-election bid.