Rep. Tom Kean Jr., R-N.J., has been absent from the House of Representatives since early March due to a "personal health matter," according to his office and House Speaker Mike Johnson.

The congressman has not cast a vote since March 5, Johnson confirmed Friday. The speaker indicated that Kean is expected to return "very soon" but provided no specific timeline for his comeback.

Kean's absence comes as House Republicans operate with a historically narrow majority, making each member's presence significant for legislative votes. Johnson has struggled to maintain party unity and secure passage of key legislation with the slim margin.

The New Jersey district represented by Kean is considered a competitive seat and is viewed as a top pickup target for Democrats in the November elections. Kean first won the district in 2022, flipping a seat that had been held by Democrats.

Neither Kean's office nor House leadership has provided additional details about the nature of his health matter or medical condition. The congressman's extended absence has not affected the overall balance of power in the House, as he remains a member while away from voting duties.