Chuck Grassley

In the 2022 Senate race for IA Senate seat, Chuck Grassley (R) won with 56.0% of the vote, defeating Michael Franken (D) who received 43.8%. 3 additional candidates split the remaining vote. Chuck Grassley's 12.2-point lead over the runner-up showed solid but not overwhelming support.

This was an open-seat race with no incumbent running — Joni K. Ernst (R) previously held the seat. Open seats typically attract stronger candidates and heavier spending from both parties. As a Republican, Chuck Grassley benefited from the historical midterm penalty against the president's party — with a Democrat in the White House, the opposition typically gains seats.

In the 2016 Senate race for IA Senate seat, Chuck Grassley (R) won with 60.1% of the vote, defeating Patty Judge (D) who received 35.7%. 3 additional candidates split the remaining vote. Chuck Grassley's 24.4-point advantage over the runner-up confirmed a comfortable win.

This was an open-seat race with no incumbent running — Joni Ernst (R) previously held the seat. Open seats typically attract stronger candidates and heavier spending from both parties. The 2016 presidential election drove higher voter turnout, which can help or hurt down-ballot candidates depending on the top of the ticket.