"It just puts that much more pressure on me because it'll be the last six years that I'm going to put in the Senate," he said. "I want them to be the best years I can possibly put in so that my state benefits greatly from them, and the country."
Hatch argued in his campaign that his seniority would allow him to become chairman of the powerful Senate Finance Committee if Republicans could seize control of the Senate, a possibility that evaporated with Tuesday's election returns.
But even with the GOP failing to win the Senate, Hatch said, he would still be the Republican leader on that panel with plenty on the agenda.
"We are definitely going to have to do tax reform," he said. "I still want to push a constitutional balanced-budget amendment. We are going to have to find some way of stabilizing entitlements."
Howell, a former state senator, said his rival's claim that he would be the finance chairman "was the most preposterous thing I could ever imagine, but it was brilliant marketing by Orrin's team. We found a lot of senior voters who believed it."
The underdog Democrat said heavy spending by Hatch was a key to his win, and something others could not match.
"It shows what money can buy," he said.
For his part, Hatch attributed his victory to "hard work."
The toughest part was getting through the state GOP convention against nine other Republicans, as the GOP right wing targeted him after it had successfully ousted three-term Sen. Bob Bennett two years earlier.
"The key was getting through the convention," Hatch said. "I started that two years before" to elect supporters as GOP delegates.
Howell said that, despite apparently losing to Hatch again, he takes pride in trying to create "a healthy two-party system" to give voters choices.
Hatch becomes the senior Republican senator in the Senate and third most-senior senator overall.