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Analysis

How to read the 21CEE forecast on Election Day

A margin like D+2 means the Democrat is projected ahead by 2 points, and R+2 means the Republican is. Margins are Democratic minus Republican, in percentage points.

Published · Updated · Revision 1

Evidence as of

A margin like D+2 means the Democrat is projected ahead by 2 points, and R+2 means the Republican is. Margins are Democratic minus Republican, in percentage points. Sources: 21CEE corrected final forecast, November 1, 2026

A projection is not a vote count. A result a few points either way would not surprise us, which is why thin leads can flip, and we do not publish a win probability. Sources: 21CEE corrected final forecast, November 1, 2026

Some races rest on a handful of polls and a few on none. Each graphic we post today shows how many polls sit behind a number. Sources: 21CEE corrected final forecast, November 1, 2026

Sources & data

Credits

Analysis: 21CEE editorial analysis (organization).

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