Topeka ? Greg Orman is now officially on the November ballot as an independent candidate in the U.S. Senate race.

The Kansas Secretary of State’s office said Friday it has certified enough signatures on Orman’s campaign petition to qualify him for the general election.

Orman is trying to unseat Republican incumbent Pat Roberts, who is seeking a fourth, six-year term.

The Democratic nominee is Shawnee County District Attorney Chad Taylor.

Orman is an Olathe businessman and the co-founder of a business capital and management services firm.

He says in a news release that his candidacy offers voters a choice between partisan politics of the past and an independent approach that focuses on practical problem-solving.

Orman is on an eight-day, 18-stop bus tour around the state.