Sen. Jon Kyl will announce his plans to retire at a press conference in Arizona later today, a source confirms to POLITICO.
Kyl's retirement could make this into a competitive race, depending on who pulls the trigger for Team Blue. (Kyl's own numbers were fairly strong against a number of high-profile Dems.) More as we get it.
UPDATE: 6th CD GOP Rep. Jeff Flake is very likely to enter the race in the coming days. The Politico has some comments from a few other possibilities, including Brock Landers himself:
Former Rep. John Shadegg told POLITICO he was "very surprised" at the news and called Kyl's retirement "a loss for Arizona and a loss for the nation."
"I hope that the rumors are wrong. I hope Jon Kyl is running again," he said, declining to discuss his interest in the seat.
Reached on his cell phone, first-term Rep. Ben Quayle said he had no comment on Kyl's plans, accused the reporter of calling the wrong number and then hung up.
In a text message, former Rep. J.D. Hayworth wrote, "stay tuned."
ANOTHER UPDATE: Real Clear Politics reports that Janet Napolitano (Democratic ex-Gov. and current DHS Sec.) has been calling around about the race. It also mentions the possibility of GOP Gov. Jan Brewer, who's termed-out and can't run again in 2014... and since every other Rep. in the state has been mentioned, Trent Franks too. Via the Twitter, there's word of two more guys who've been hitting the phones: Democratic Phoenix mayor Phil Gordon, and Republican Maricopa Co. Sheriff Joe Arpaio (the repellent Arpaio, who's in his 70s, seems to threaten to run statewide every two years and then not do it, though).