The first major round of primary elections took place Tuesday, with stakes for control of the House and Senate after November's midterm elections.
In West Virginia, Indiana and Ohio, Republicans chose nominees who will challenge Democratic Senate incumbents later this year. In some safe House districts, the primary winner effectively determined the general election victor. In other competitive districts, the major parties chose who will fight for a House seat later this year.
The most closely watched race Tuesday was in West Virginia, where Republican leaders got their wish as ex-convict Don Blankenship fell well short of winning the Senate primary. The GOP worried the brash-ex coal baron would have struggled to defeat Democratic Sen. Joe Manchin in a general election.
Here are some of the notable results, according to NBC News: