The South Dakota senator, in an announcement on his website, said he felt he was best-suited to remain in the Senate.
"[A]t this time, I feel that I am best positioned to fight for America’s future here in the trenches of the United States Senate," Thune wrote.
The senator had previously promised to announce his intentions by the end of February.
Tuesday, February 22, 2011
Lincoln Days speaker will not run for president
Sen. John Thune, R-S.D. the keynote speaker for this weekend's Lincoln Days activities in Springfield, will not run for president in 2012: