Mark Kelly, a Democrat, won his party’s nomination for the US Senate in Tuesday’s primary election in Arizona. The US Senator was unopposed in the elections and will fight to retain his seat in the upper legislative chamber in November’s midterm elections.

Kelley’s opposition has not been decided so far as Republican ballots are still being counted. Kelley’s nomination confirmation came soon after the polls closed in Arizona.

Also Read: US primaries: Kattie Hobbs wins Democratic governor race in Arizona

A crowded Republican race is yet to conclude, but two frontrunners have emerged early on Tuesday. Blake Masters was leading the race after securing more than 169,000 votes. He also received an endorsement from former US President Donald Trump. He is closely followed by Jim Lamon, who had 30.3% votes a few hours into the counting. It is not clear when the Republican Senate race in Arizona would conclude.

58-year-old Mark Kelly, who is a retired astronaut and a US Navy Captain, was not in Arizona to deliver a victory speech on Tuesday. He was in Washington DC to cast his vote on crucial legislations like the Veteran Affairs bill.

Arizona has been slowly turning into a Democratic stronghold, recent elections have indicated. In 2018, voters picked moderate Democrat Kristen Sinema. Two years later, in the US Presidential elections, Arizona narrowly voted to make Democrat Joe Biden the US President.

Also Read: Arizona’s Pinal County has election irregularities: Republican National Committee

Former US President Donald Trump has also invested his clout in the Arizona primaries by handing out endorsements. He backed Kari Lake, who walked away from her nearly three-decade career in television news and embraced his lies about the 2020 election. She faced Karrin Taylor Robson, who was backed by prominent Republicans around the country looking to push their party to move on from Trump.

In the race to oversee elections as Arizona secretary of state, Trump also backed a state lawmaker who was at the US Capitol on January 6 and claims the former president was cheated out of victory.