Updated at 11:56 a.m. ET
With about 100 days left before the general election, officials are simultaneously trying to prepare for two very different types of voting, while facing two unprecedented threats to safety and security. It's a juggling act that has voters, political parties and officials anxious about how smoothly November's voting will go.
"Doubt is our enemy," U.S. Sen. Angus King, an independent from Maine, said at a Senate hearing Wednesday on what Congress can do to ensure public confidence in this year's election results.