UPDATE 3: Huffington Post reports that a surgeon is "very optimistic" on Giffords' chances of recovery. Sadly, at least one patient taken in from the shooting, a child, has died. Altogether, six people have died, including a Giffords aide.
UPDATE 2: Politico says that Giffords' office is saying she is not dead.
UPDATE: NPR is now saying Rep. Giffords has died. Several others as well.
U.S. Rep. Gabrielle Giffords of Arizona was shot outside a grocery store in Tucson while holding a public event, Arizona Public Media reported Saturday.
Giffords, who was re-elected to her third term in November, was hosting her first "Congress on Your Corner" event at the Safeway in northwest Tucson when a gunman ran up and started shooting, according to Peter Michaels, news director of Arizona Public Media.
At least five other people, including members of her staff, were hurt. Giffords was transported to University Medical Center in Tucson. Her condition was not immediately known.
Giffords was talking to a couple when the man ran up firing indiscriminately, and then ran off, Michaels said. According to other witnesses, the was tackled by a bystander and taken into custody.
This is just beyond, beyond, beyond horrible. All I can do is just hope everyone is okay.