Looking at ballot measure petition success rates in the last decade
We are more than halfway through the calendar, nearing the end of the ballot measure filing cycle. As of July 1, 882 ballot initiatives and veto referendums have been filed with state officials for circulation during this year’s election cycle. That number is higher than the average of 761 filed initiatives and veto referendums for even-numbered election years from 2010 through 2018.
Initiatives and referendums have been filed in 23 of the 26 states with a statewide process. Washington, Colorado, and Missouri have the highest numbers of filings at 229, 193, and 151, respectively. California has the next highest with 46.
Twenty-nine citizen-initiated measures—24 ballot initiatives and five veto referendums—are certified for 2020 ballots. Proponents of 19 other citizen-initiated measures submitted signatures which are still being verified by state officials.
Here’s a breakdown of how this year’s numbers compare to the last decade.
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From 2010 through 2018, an average of 761 initiatives and veto referendums were filed for even-numbered election years.
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An average of 59 initiatives were certified during those cycles, which amounted to an average petition success rate of 7.8%.
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In 2016 and 2018, there were over 50% more initiatives and veto referendums filed—1,069 and 947—than the median of 616 since 2010.
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There were 76—which was a decade high—and 68 certified citizen-initiated measures in those years, respectively.
Missouri, Washington, and Colorado featured the highest average initiative filings from 2010 through 2018 with 185, 129, and 103, respectively, and average success rates of 1.7%, 3.6%, and 4.9%. California had an average of 95 initiative filings and an 11% success rate.
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