5 takeaways from the Illinois primaries

CBS News
March 18, 2026
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3 min read

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Illinois primary elections showed strong Democratic registration advantage positioning Democratic nominees as general election frontrunners.

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Illinois held primary elections that revealed five key patterns shaping the state's political landscape heading into November. The state's strong Democratic registration advantage means Democratic nominees from Chicago, its suburbs, and statewide races are positioned as frontrunners for the general election. The primaries tested candidate viability across a range of contests and showed where party energy and voter priorities lay ahead of the fall campaign. Chicago-area races and suburban contests drew particular attention as barometers of Democratic strength in regions that will likely determine statewide outcomes. The results clarify which candidates have momentum and which face steeper paths to November victory in a state where the party's structural advantage is decisive.

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