Republican Congressman Doug LaMalfa of California has died unexpectedly at age 65, further narrowing the GOP’s slim majority in the U.S. House of Representatives.

LaMalfa, a former rice farmer elected to Congress in 2013, focused on agriculture, water issues, and support for rural communities.

President Trump and colleagues paid tribute, with Trump calling him a “great member” who voted with him consistently.

LaMalfa’s death, coupled with Marjorie Taylor Greene’s recent resignation, leaves Republicans with only a two-vote House margin and heightens the stakes for upcoming special elections, the BBC has reported.

California Governor Gavin Newsom must call a special election within 14 days to fill LaMalfa’s seat.