Longtime Sen. Orrin Hatch, R-Utah, clinched renomination Tuesday for the seat he has held since 1977. The Utah Republican faced his most significant intra-party challenge since taking office. 

Former Utah state Sen. Dan Liljenquist pushed Hatch into his first primary in the last 36 years after the incumbent failed to win enough delegates at the state's GOP delegate convention in April. 

The Utah Republican convention system requires that a candidate win at least 60 percent of the delegates in order to advance to the general election. In the event no candidate garners the required number of delegates, the top two contenders go on to a primary. Hatch fell short by less than one percent.

But recent polling in the days before the primary election indicated that Hatch held a sizable lead over Liljenquist. But the challenger was also at a major fundraising disadvantage against Hatch, whose campaign spent about $10 million on the primary race. In contrast, Liljenquist spent $614,000 - with $400,000 of it money he loaned to his campaign.