A contentious primary season is nearing its end. Several states have primaries that will highlight changes to congressional maps. These changes are a result of efforts led by Republicans. The outcomes of these primaries will help determine control of Congress.

Some candidates are facing challenges due to scandals, while others have the same last name. Incumbents are also at risk of losing their positions.

Further information about the primaries and their potential impact is available, including details about the candidates and the states involved.