Former Alaska attorney general Dan Sullivan (R) announced Tuesday that he will run for the Senate, becoming the latest entrant into what could be a competitive Republican primary.

"I am running for the United States Senate to provide strong leadership and Alaskan resolve to create an enduring energy and economic renaissance that will lift Alaska and America -- creating jobs, prosperity, and security into this new century," Sullivan said in a statement.

Sullivan's bid is no surprise. He resigned as Alaska Department of Natural Resources commissioner last month in what appeared to be a precursor to a campaign. His main GOP competitor will be Lt. Gov. Mead Treadwell, who announced a bid this summer. Tea party favorite and disastrous 2010 nominee Joe Miller has filed papers to run, too.

Sen. Mark Begich (D) faces reelection next year.