SYDNEY, Australia — Julian Assange, the founder of WikiLeaks, formally inaugurated a new political party bearing the name of his antisecrecy organization on Thursday and declared his own unorthodox candidacy for a seat in the Australian Senate in national elections to be held later this year.

In a telephone interview, Mr. Assange said he had every confidence in his ability to run a campaign from the Ecuadorean Embassy in London. He has been living under asylum there for more than a year to avoid being extradited to Sweden, where he is wanted for questioning on sexual assault accusations.

“It’s not unlike running the WikiLeaks organization,” he said. “We have people on every continent. We have to deal with over a dozen legal cases at once.”

“However, it’s nice to be politically engaged in my home country,” he added.

Mr. Assange, 42, an Australian computer hacker who rose to prominence as an evangelist for radical government transparency and a critic of United States foreign policy, is a deeply polarizing figure. Many believe that the WikiLeaks Party is simply a vanity project for Mr. Assange, although several polls conducted since plans to establish the party emerged earlier this year suggest that it could fare better than expected.