Should Hatch win the nomination Saturday, he would have only the general election, largely a formality in statewide races in GOP-dominated Utah, to dispense with. If he falls short, Hatch would still be favored in the primary.
Hatch, a nearly 36-year Senate veteran, said last month that his seventh term would be his last.
Vice President Joe Biden waits to conduct a mock swearing-in ceremony with Sen. Brian Schatz, D-Hawaii, in the Capitol's Old Senate Chamber, December 2, 2014. Schatz was sworn in to serve the remainder of his term since he was appointed to the seat after Sen. Daniel Inouye, D-Hawaii, passed away.