# Will the Democratic Party win the IL-01 House seat?

<table class="pythia-summary">
<tr><th>Predicted at</th><td>2026-03-02 00:10 UTC</td></tr>
<tr><th>Prediction</th><td><strong>99.8%</strong></td></tr>
<tr><th>Market (at prediction)</th><td>95.0%</td></tr>
<tr><th>Market (live)</th><td><span class="pythia-live-price" data-token-id="111429360194976642463122155544941063467273552031677199852315518536574003906807">—</span></td></tr>
</table>

## Analysis

The Illinois 1st Congressional District has been held by the Democratic Party continuously since 1935, establishing a long-term pattern of single-party dominance. Structural indicators, such as the district's D+18 partisan voting index, reflect a significant electoral advantage that aligns with historical outcomes. When analyzing this seat through the lens of similar heavily Democratic urban districts, the reference class consistently demonstrates near-total electoral stability. Current assessments categorize the district as a safe seat, reflecting the overwhelming weight of these historical and structural factors.

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