IL SB1125

Requires write-in candidates for statewide, congressional, state legislative, and judicial offices to file a notarized declaration of intent with the State Board of Elections, including name, address, office sought, election date, and notarized signature.

Changes the filing deadline for write-in candidate declarations from 61 days to 75 days before the primary or election, with an exception allowing filing up to 7 days before the election if a candidate's nominating papers are challenged after the 75-day deadline.

Requires President and Vice President candidates (or Governor and Lieutenant Governor candidates) to file one joint declaration of intent, with votes for either candidate counting as a valid write-in vote for the slate.

Directs the State Board of Elections to provide a listing of valid write-in candidates to election authorities no later than the ballot certification deadline.

Makes conforming changes to the Illinois Municipal Code regarding write-in candidates for municipal offices, updating filing procedures and deadlines to match the new requirements.