When I type "Clinton" it fills in the box for DeWitt Clinton but not for Hillary. So I start to type "Hillary" and it gives me a point once I've typed "Hilla" but it doesn't fill in the box. Then I'm able to type "Hillary Clinton" and it gives me another point and finally fills in the box.
Willkie is misspelled. You missed the "i". I'm pretty sure the Democratic Party nominated both Breckinridge and Douglas for the 1860 election, so maybe add them both? Also, you should probably update the quiz to include 2020 as well.