The best and worst pollsters of 2025

Simple average error, Advanced Plus-Minus scores, bias, and number of polls in the final 21 days before House and gubernatorial general elections in 2025, for pollsters that conducted at least one such poll

Note: Advanced-Plus-Minus describes how each pollster’s average error compares to other pollsters’ in the same election. Negative Plus-Minus scores are better. Polls that are banned by Silver Bulletin are excluded from the analysis. The 21 day cutt-off is based on a poll's median field date.
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