Staggered Senate
Senators serve four-year terms; half the seats are on the ballot each election.
Iowa › Iowa State Senate · November 3, 2026 · Updated Oct 16, 2026
Iowa State Senate District 15
Tony Bisignano has no major-party opponent.
Tony Bisignano has no major-party opponent.
How this race is decided
The candidates
DemocraticIncumbent
Tony Bisignano
- Experience
- State legislature
The district
Lean D+19: 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
- 62,327
- People per km²
- 604
- Adults with a B.A.+
- 22%
- White, no degree
- 50%of adults
- White 58%
- Hispanic 23%
- Black 7%
- Asian 7%
- Other / multiracial 5%
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
24,157 two-party votes · D+17.1 · D+18.6 vs. the nation✓ Kamala Harris (D)58.5%
Donald Trump (R)41.5%
2022
12,672 votes · Uncontested by the other party✓ Tony Bisignano (D)95.3%
Write-In (—)4.7%
2020 President Vote in this district
26,200 two-party votes · D+23.0 · D+18.5 vs. the nation✓ Joe Biden (D)61.5%
Donald Trump (R)38.5%
2018 Earlier district lines
29,856 votes · R+13.9✓ Zach Nunn (R)56.9%
Dan Nieland (D)43.0%
2016 President Vote in this district
22,914 two-party votes · D+22.2 · D+19.9 vs. the nation✓ Hillary Clinton (D)61.1%
Donald Trump (R)38.9%
2014 Earlier district lines
25,315 votes · D+5.1✓ Chaz Allen (D)52.6%
Crystal Bruntz (R)47.4%