Mark DeSaulnier

In the 2024 House race for CA-10, Mark DeSaulnier (D) defeated Katherine Piccinini (R) 66.5% to 33.5%. Mark DeSaulnier received 242,325 votes compared to 122,219 for Katherine Piccinini, a dominant 32.9-point margin reflecting a safely partisan district.

As the incumbent, Mark DeSaulnier benefited from name recognition, established constituent services, and the roughly 2-3 point advantage that sitting members typically enjoy. The 2024 presidential election drove higher voter turnout, which can help or hurt down-ballot candidates depending on the top of the ticket. The wide margin suggests this district is firmly in the Democrat column for the foreseeable future.

In the 2022 House race for CA-10, Mark DeSaulnier (D) defeated Michael Ernest Kerr (G) 78.9% to 21.1%. Mark DeSaulnier received 198,415 votes compared to 52,965 for Michael Ernest Kerr, a dominant 57.9-point margin reflecting a safely partisan district.

This was an open-seat race with no incumbent running — Josh Harder (D) previously held the seat. Open seats typically attract stronger candidates and heavier spending from both parties. As a Democrat, Mark DeSaulnier won despite the historical midterm penalty against the president's party (Democrat Biden was in office). The wide margin suggests this district is firmly in the Democrat column for the foreseeable future.

In the 2018 House race for CA-11, Mark Desaulnier (D) defeated John Fitzgerald (R) 74.1% to 25.9%. Mark Desaulnier received 408,738 votes compared to 142,624 for John Fitzgerald, a dominant 48.3-point margin reflecting a safely partisan district.

As the incumbent, Mark Desaulnier benefited from name recognition, established constituent services, and the roughly 2-3 point advantage that sitting members typically enjoy. As a Democrat, Mark Desaulnier benefited from the historical midterm penalty against the president's party — with a Republican in the White House, the opposition typically gains seats.

In the 2016 House race for CA-11, Mark Desaulnier (D) defeated Roger Allen Petersen (R) 72.0% to 27.9%. Mark Desaulnier received 214,868 votes compared to 83,341 for Roger Allen Petersen, a dominant 44.1-point margin reflecting a safely partisan district.

As the incumbent, Mark Desaulnier benefited from name recognition, established constituent services, and the roughly 2-3 point advantage that sitting members typically enjoy. The 2016 presidential election drove higher voter turnout, which can help or hurt down-ballot candidates depending on the top of the ticket.

In the 2014 House race for CA-11, Mark Desaulnier (D) defeated Tue Phan (R) 67.3% to 32.7%. Mark Desaulnier received 117,502 votes compared to 57,160 for Tue Phan, a dominant 34.5-point margin reflecting a safely partisan district.

This was an open-seat race with no incumbent running — George Miller (D) previously held the seat. Open seats typically attract stronger candidates and heavier spending from both parties. As a Democrat, Mark Desaulnier won despite the historical midterm penalty against the president's party (Democrat Obama was in office).