Sen. Mike Johanns (R-Neb.) will not seek reelection in 2014, retiring after just one term in office and opening a seat that is likely to remain in Republican hands.
"With everything in life, there is a time and a season. At the end of this term, we will have been in public service over 32 years. Between the two of us, we have been on the ballot for primary and general elections 16 times and we have served in eight offices. It is time to close this chapter of our lives," the email adds.
Johanns previously served as governor of Nebraska and Agriculture secretary. His wife is a former state senator.
Sen. Jerry Moran (R-Kan.), chairman of the National Republican Senatorial Committee (NRSC), praised Johanns in a statement.
"Mike Johanns epitomized principled leadership during his near three decades of public service, always putting the needs of Nebraskans first. I thank him for his service and wish he and his family the very best in their next chapter,” said Moran. “The Cornhusker state will look to continue its strong conservative tradition by electing an equally dedicated Republican leader in 2014."
Nebraska Gov. Dave Heineman (R) is likely to pursue the seat in 2014.
This post was last updated at 12:22 p.m.