Arizona will have a new Secretary of State in November.

Challenger Steve Gaynor has secured the GOP nomination for the state's second-highest office over incumbent Michele Reagan.

FULL COVERAGE: Arizona primary results

Gaynor, a businessman who said he put $1.5 million of his own money into his campaign, said he launched his campaign after several missteps left Reagan "vulnerable."

He campaigned on running a more efficient office, focusing on elections division.

Reagan is a former state lawmaker who has championed increased online processes for those who use the office's services.

During her first term, she launched a new website aimed at increasing transparency for political donations.

Gaynor criticized the site as a poor use of tax dollars.

He will face former state lawmaker Katie Hobbs in November, who ran unopposed.