"I just feel very excited, very humbled and very grateful to all the supporters I had, some whom I knew personally and some who I didn't know," Cornett said.
Cornett, who had not faced opposition since first winning the office in 1992, won Tuesday's Republican primary race with 72.8 percent of the vote, collecting 5,782 votes to challenger Dan Sammons' 2,163 votes. She faces no Democratic opposition in the November general election.
"I think it was the support and dedication of my staff that attracted a lot of people in our direction," Cornett said.
The probate court judge administers estates, oversees involuntary committals and appointments of guardianships, and issues marriage licenses and gun permits, among other duties.
Sammons, a private practice attorney well-known in local legal circles, said he wanted to put his 30 years of experience in the law to use as a judge.