As noted earlier, the 13th district U.S. House race in Florida was extremely close. Only 300 votes separate the Democrat and the Republican candidates; no other candidates ran. In Sarasota County, Florida, 13% of the people who voted, failed to vote for U.S. House. This picture of the electronic screen ballots shows why. Note pages one and two. In the other three counties in the 13th district, more than 97% of the voters who came to the polls voted for U.S. House. The other three counties did not have this bad design. Also, among the Sarasota County absentee voters who voted by mail (and thus were not subject to this bad design) more than 98% voted for U.S. House.
Since Sarasota County voters who did vote for U.S. House were disproportinately more supportive of the Democratic candidate than the other counties in the district, it is very likely that this poor design cost the Democrats a seat.