Since Facebook launched the campaign, California has seen 200,000 registrations, and Minnesota saw 27,000 registrants in one day, smashing that state's record.
Utah's record was set when about 35,000 people registered in one day during the presidential caucus in March, but Thomas says most of that group used the system to update information. This time, most of the registrants were first-time voters.
"That's exciting," he said. "You've been able to tap into something where you can really reach out to first-time registrants and get them in the system."
Other campaigns targeting young adult voters took place across Utah's college campuses this week, celebrating National Voter Registration Day.
At Brigham Young University, the Office of Civic Engagement doubled its registration numbers from the past presidential election when Mitt Romney, a Mormon, ran against Barack Obama.
The LDS Church-owned school set up two voter-registration booths in and around the Wilkinson Student Center on Wednesday and Thursday as part of statewide activities sponsored by Utah nonprofit Voterise and Utah Campus Compact to celebrate the week of National Voter Registration Day.
Upcoming events are scheduled on the campuses of Dixie State University, Salt Lake Community College, the University of Utah, Utah State and Utah Valley University.
At the stations, student employees and volunteers equipped with campus laptops helped students through the registration process using a website called TurboVote. By the end of the school's two-day stint, 2,500 students had visited the BYU TurboVote website to register or request an absentee ballot.
"Most of our student body is not from Utah, so it's not as easy for them to be able to go to their home-state elections office and register to vote," said Richard Davis, a political science professor and director of the Office of Civic Engagement at BYU.
Navigating the confusion of absentee ballots seemed to be the main hurdle students needed help clearing.
"People actually want to be involved when they know how to," said John Thomson, Civic Engagement Leadership Association president.
Millennials make up one of the most underrepresented groups in the electorate, according to Voterise Executive Director Judi Hilman. Young adult voter turnout in Utah in the past general election was 8 percent, and 34 percent in the past presidential election.
"Some of it is a sense of futility, like 'what's one vote?' " Hilman said.
She acknowledged the "very real" and unprecedented financial pressures facing modern college students as distractions from participating politically, referring to high student debt and low job placement.
BYU isn't one of the nine member schools that make up the Utah Campus Compact, but the school's Office of Civic Engagement partners with the compact frequently, hosting and promoting activities aimed at young voters.