1 of 7
Steve Griffin, Deseret News
Lew Ross, of Salt Lake City, casts his ballot at the Salt Lake County Government Center on Election Day Tuesday, June 26, 2018.

SALT LAKE CITY — Utah's elections office says no problems have been reported at polling stations across the state during Tuesday's primary election.

Justin Lee, state director of elections, said 301,000 Utah voters have already cast ballots by mail or through early voting ahead of Tuesday. The number of votes cast Tuesday won't be available until after polls close at 8 p.m.

Voter participation was higher than usual in most counties during early mail-in voting, officials said. They credit the GOP primary battle between former presidential candidate Mitt Romney and state Rep. Mike Kennedy for the U.S. Senate with fueling voter turnout.

Lee said it's unclear precisely how many voters are eligible to vote Tuesday, since there aren't races in every party in every district of the state.

The last statewide Republican primary race was for Gov. Gary Herbert's re-election in 2016. Lee said roughly 247,000 people voted that year.

There are two other federal races:

• Rep. John Curtis, R-Utah, and former state lawmaker Chris Herrod are vying for the U.S. Representative for 3rd District ballot in a rematch of last year's primary.

• Democrats Lee Castillo and Kurt Weiland are battling in the 1st Congressional District for the right to face Rep. Rob Bishop, R-Utah, who has represented that district since 2003.

Candidates for 12 Utah House seats and five Senate seats will also be decided as well as school board and other local races.

Although it's too late to change party affiliation, unaffiliated voters can choose to affiliate and vote in the Republican primary at the polls. Democrat primaries are open to all voters.

Additionally, a new law passed in April allows 17-year-old Utahns to vote in the primary if they turn 18 on or before Nov. 6, the date of the general election.

And if you forgot to mail in your ballot by Monday's deadline, you can still drop it off at a polling center.

To find out where to vote, visit vote.utah.gov.

Contributing: Associated Press