Illinois › Boone County › Illinois Senate District 35
2 candidates are tracked for Illinois Senate District 35 on the November 3, 2026 ballot: Sarah B. Mertens and Dave Syverson. Candidate information follows official Boone County election filings; verify with the official election office linked below.
Sarah B. Mertens (Democratic), Dave Syverson (Republican) meet on the November 3 ballot; Dave Syverson is the sitting member, per the General Assembly's roster. Party nominees were chosen at the March 17 primary (plurality, no runoffs); independent and new-party candidates qualified by petition. The field is the State Board of Elections' 2026 General Election candidate list (status Active, read September 7, 2026). This seat is elected by district; only the district covering your address appears on your ballot.
Democratic
Sarah B. Mertens is the Democratic candidate for Illinois Senate District 35 on the November 3, 2026 ballot, per the State Board of Elections' certified candidate list. No campaign website or questionnaire response was found as of September 7, 2026.
Republican · Incumbent
Dave Syverson is the Republican candidate for Illinois Senate District 35 on the November 3, 2026 ballot, per the State Board of Elections' certified candidate list. Dave Syverson is the sitting member, per the General Assembly's roster. Syverson is the sitting state senator for the 35th District, a seat he has held since 1993. He works as an independent financial and benefits broker in Rockford, per the General Assembly's roster. No campaign website or questionnaire response was found as of September 7, 2026.