Polling Error in the 2018 Midterm Election

Here are some graphs summarizing analysis I’ve been doing on polling error in the 2018 midterm elections. They show both net Democratic polling error and absolute polling error across all polls, then broken down by Senate, Governor, and House Races, and then broken down by specific races and individual pollsters (with at least three polls since October for the latter two). (Note: the data was collected as of November 8th.)

votepollscomp_allraces_111118.png

votepollscomp_senateraces_111118

votepollscomp_governorraces_111118.png

votepollscomp_houseraces_111118.png

pollerror_netdembyrace_111118.png

pollerror_absdembyrace_111118.png

pollerror_netdembypollster_111118.png

pollerror_absbypollster_111118.png

Polling Error in the 2018 Midterm Election

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