resigned in January.
Ron Barber, a former aide of Giffords' is running for the Democrats.
He is facing Republican Jesse Kelly, who barely lost to Giffords in 2010.
Expectations are for this election to show how the state will go in the November Presidential election.
Barber is trying to get the public to focus on his closeness to Giffords, who has been helping him campaign recently.
Republicans are making sure that Barber's connections to Obama are well known, in hopes that such will sway public opinion in an area that has little love for Obama.