What to know about Illinois' Senate primary race as voters cast ballots

CBS News
March 17, 2026
3 min read

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Illinois voters cast ballots in primary elections that will reshape the state's congressional delegation, with a major Democratic Senate primary to replace retiring Sen. Dick Durbin.

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Illinois voters cast ballots Tuesday in primary contests that will determine candidates for congressional races, with the Democratic Senate primary emerging as the centerpiece contest. The race centers on filling the seat of retiring Sen. Dick Durbin, one of the Senate's longest-serving Democrats and a powerful appropriations committee member. The outcome of this primary will effectively determine who represents Illinois in the Senate, given the state's Democratic lean in general elections. Multiple candidates are competing for the nomination, making this a consequential test of party influence and grassroots momentum in one of the nation's most politically significant Democratic strongholds.

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