David Perdue, the newly crowned GOP nominee for U.S. Senate, is already looking ahead to November and what he expects will be another bruising, long and closely watched campaign.

“This race will be a great test for the failed policies of this administration,” Perdue said during an appearance Wednesday morning on Good Day Atlanta.

Perdue, a wealthy businessman and political novice, stunned the GOP and business establishment Tuesday by defeating 11-term U.S. Rep. Jack Kingston after a nasty and record-long primary runoff campaign.

He won the runoff with 50.9 percent of the vote to Kingston’s 49.1 percent.

His victory now sets up a battle of the “outsiders,” since both he and Democratic nominee Michelle Nunn have never held political office, though both come from political families. Perdue is first cousin to former two-term Gov. Sonny Perdue, the state’s first Republican governor since Reconstruction. Nunn is the daughter of Sam Nunn, who represented Georgia in the U.S. Senate for 24 years.

Perdue said Wednesday he thinks the last year of campaigning, including the runoff fight with Kingston, “made me a better candidate.”

He said Kingston has vowed to work “shoulder to shoulder” with him as he focuses on the failed policies of the Obama administration and Democrats and on voters’ concerns about the debt, economy and jobs.