Early voting in person began Monday and runs through November 2. First, a look back at historic Day 1.

More than 572K people voted early in person on Monday, or their mail ballots were returned by Monday, in the 15 counties with the most registered voters. That is more than the number of people who voted in person and by mail in the Top 15 counties on Day 1 in 2006, 2010 and 2014 combined. It is just short of the number of people who voted on Day 1 in 2016, a presidential election. In the chart below, 2018 turnout for Day 1 is a purple dot just below the first gray dot. After tomorrow, a line will be visible for 2018.

According to a preliminary analysis by Republican strategist and data nerd Derek Ryan, about three quarters of votes cast on or before Day 1 were from voters who participated in one or both of the last two gubernatorial elections. About one in five votes came from participants in one or both of the last two presidential elections, but who did not vote in 2010 or 2014. About 6% were cast by people who had not voted in any of the last four even-year general elections.

Ryan also analyzed the primary participation (PDF) of Day 1 early voters.

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