Arizona Sen. John McCain will declare a bid today for a sixth six-year term, an aide confirmed early Tuesday morning.
The announcement, set for 2:30 p.m. ET at an Arizona Chamber of Commerce event in Phoenix, end speculation that Republican and former GOP presidential nominee might retire after his term expires at the end of 2016.
McCain, who has drawn the ire of conservatives throughout his career, is likely to face a primary challenger. So far, only State Sen. Kelli Ward, who is little known outside her district, has showed strong interest in a bid. Conservatives are also hopeful that Rep. Matt Salmon will decide to challenge McCain.