GOP Rep. Tom Kean hasn't been seen in Washington since early March due to an unspecified medical issue.
House Republicans are concerned about his health and whether the unexplained absence will complicate their ability to hold a key seat.
Kean is running unopposed in his primary Tuesday. He hasn't offered a date for his return to Capitol Hill.
AI-generated summary was reviewed by a CNN editor.
GOP Rep. Tom Kean is running unopposed in his primary on Tuesday, seeking a third term in one of the nation’s most competitive seats.
