As Illinois prepares for its 2026 primary election, early voting is already underway in several parts of the state, setting the stage for a contest that could reshape the political landscape despite the absence of a presidential race. The March 17 primary arrives at a pivotal moment, marked by the retirement of long-serving U.S. Sen. Dick Durbin and a series of high-profile matchups across statewide and congressional offices.

In suburban Cook County, early voting begins Monday, with additional early voting sites opening across the Chicago area. Election officials say voters can cast ballots in person ahead of Election Day or opt for mail-in ballots. According to the Illinois State Board of Elections, mailed ballots must be postmarked on or before March 17 and received within 14 days to be counted. Voters choosing this option are urged to review recent changes to United States Postal Service postmark procedures that took effect January 1, as improper postmarks could affect ballot eligibility.

The Illinois governor race remains a focal point. Democratic Gov. J.B. Pritzker is running unopposed in his party’s primary, while multiple Republican candidates are competing for the opportunity to challenge him in November. Meanwhile, the U.S. Senate race has drawn considerable attention following Durbin’s retirement after more than three decades in office, prompting competitive primaries on both sides.

In addition to the marquee statewide contests, voters will decide party nominees in all 17 congressional districts. Races in the 2nd, 7th, 8th and 9th districts are being closely monitored, alongside contests for Illinois Comptroller and Cook County Board President. With early voting expanding access and mail-in ballots available, election officials are encouraging residents to verify polling locations and review voter information well before Election Day.