Staggered Senate
Senators serve terms of two or four years in a set pattern each decade, so a different share of the seats is on the ballot each election: 39 of 59 in 2026.
Illinois › Illinois State Senate · November 3, 2026 · Updated Oct 16, 2026
Illinois Legislative District 51
Chapin Rose has no major-party opponent.
Chapin Rose has no major-party opponent.
How this race is decided
The candidates
RepublicanIncumbent
Chapin Rose
The district
Lean R+45: how much more Democratic or Republican than the nation it votes for president.
Presidential vote
Precinct results re-aggregated to the current district lines.
Who lives here
- Population
- 226,021
- People per km²
- 17
- Adults with a B.A.+
- 25%
- White, no degree
- 69%of adults
- White 90%
- Hispanic 4%
- Black 2%
- Asian 1%
- Other / multiracial 3%
American Community Survey 2020–2024, aggregated from census tracts.
Past results
Results in the same-numbered district; earlier elections may have used different lines.
2024 President Vote in this district
104,267 two-party votes · R+45.2 · R+43.7 vs. the nation✓ Donald Trump (R)72.6%
Kamala Harris (D)27.4%
2022
72,990 votes · Uncontested by the other party✓ Chapin Rose (R)100.0%
2020 President Vote in this district
110,575 two-party votes · R+44.7 · R+49.2 vs. the nation✓ Donald Trump (R)72.3%
Joe Biden (D)27.7%
2018 Earlier district lines
77,252 votes · Uncontested by the other party✓ Chapin Rose (R)100.0%
2016 President Vote in this district
98,616 two-party votes · R+46.0 · R+48.3 vs. the nation✓ Donald Trump (R)73.0%
Hillary Clinton (D)27.0%
2014 Earlier district lines
69,665 votes · Uncontested by the other party✓ Chapin Rose (R)100.0%