...First, the "other stuff" -
On a sad note, Michael D. Ryan, the highly-regarded former Arizona Supreme Court Justice, passed away on Monday. His funeral services will be held Friday at St. Francis Xavier Church on Central Avenue in Phoenix at 3 p.m. Services will be preceded by visitation at 2 p.m. As a veteran (a hero, actually), his body will probably be interred at Arlington National Cemetery.
Calling him "highly regarded" is an understatement. He is one of the reasons that the Arizona Judicial branch is the branch of Arizona government that is respected across the country for its professionalism, in many ways because it now reflects the professionalism, diligence, and fairness that he brought to it as a prosecutor, Superior Court judge, and finally, as a Supreme Court justice.
My condolences go out to his family, friends, and colleagues.
...Now for the "candidate" stuff -
...State Rep. Matt Heinz (D-Tucson) has announced his candidacy for the CD8 seat recently vacated by the recovering Gabby Giffords. He is a likely candidate for the special election in June (though he has said that he will support Giffords staffer Ron Barber if Barber runs in the special) and a definite candidate in the regular election in November. Because he is in the last year of his term in the lege, he won't have to resign under Arizona's "resign to run" law.
He may be the first candidate to jump into the race, and is the first state legislator to jump in, but he won't be the last, on either count.
Note: State Sen. Frank Antenori (R-Bully) has announced that he will run for the seat in November. I'm not sure about his plans for the special election.
...Maricopa County Supervisor Fulton Brock has announced that he will not seek reelection. He has been fighting the effects of a sex scandal involving his wife, his daughter, and an underaged boy. He was already facing a strong GOP challenger, but this should open up the race completely.