State Sen. Laura Kelly, D-Topeka, is ending her race for Congress in the 2nd District in eastern Kansas.
Kelly had sought to challenge one-term Republican Rep. Lynn Jenkins.
Kelly said in a statement that she was honoring her commitment to her state Senate constituents at a time when the state faces challenging budget problems. She is the ranking Democratic member of the Senate's budget committee.
"This has been a very hard decision, but it is the right one," she said in the statement.
Jenkins was elected in 2008, ousting Democratic incumbent Nancy Boyda.