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 15
Napoleon Harris has no major-party opponent.
Napoleon Harris has no major-party opponent.
How this race is decided
The candidates
DemocraticIncumbent
Napoleon Harris
- Experience
- State legislature
The district
Lean D+50: 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
- 228,417
- People per km²
- 323
- Adults with a B.A.+
- 25%
- White, no degree
- 25%of adults
- White 30%
- Hispanic 16%
- Black 49%
- Asian 1%
- Other / multiracial 4%
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
89,438 two-party votes · D+48.7 · D+50.2 vs. the nation✓ Kamala Harris (D)74.3%
Donald Trump (R)25.7%
2022
52,613 votes · Uncontested by the other party✓ Napoleon B Harris III (D)98.3%
Writein (I)1.7%
2020 President Vote in this district
101,023 two-party votes · D+55.0 · D+50.5 vs. the nation✓ Joe Biden (D)77.5%
Donald Trump (R)22.5%
2018 Earlier district lines
59,332 votes · Uncontested by the other party✓ Napoleon B Harris III (D)100.0%
2016 President Vote in this district
97,950 two-party votes · D+58.0 · D+55.8 vs. the nation✓ Hillary Clinton (D)79.0%
Donald Trump (R)21.0%
2014 Earlier district lines
49,577 votes · Uncontested by the other party✓ Napoleon Harris (D)100.0%