An election researcher in Florida found that 15 percent of mail-in ballots sent in for the midterm election by Parkland residents between the ages of 18 and 21 were not counted, exceeding the statewide average of 5.4 percent for that age group, The Washington Post reports. A shooting at Marjory Stoneman Douglas High School in Parkland in February 2018 killed 17 people, and students there quickly organized, calling for stricter gun laws, holding the March for Our Lives demonstration in Washington, and registering voters. University of Florida political scientist Daniel A. Smith determined, based on Florida's open-source voting file, that about 1 in 7 mail-in ballots submitted by college-age voters in Parkland were not counted, because they didn't arrive in time or other reasons.

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