Arizona’s GOP U.S. Senate primary is a race to the right.

Just days before early ballots hit voter’s mailboxes, Republican candidate and current Congressman Jeff Flake is out with a statewide TV ad trumpeting his conservative credentials.

Flake’s main Republican opponent, Wil Cardon, has spent millions on ads trying to paint Flake as far from conservative. The Cardon campaign has even tried to link Flake to President Obama.

In addition to Flake and Cardon, two other Republicans are running for their party’s Senate nomination. Niether has released a TV ad.

Your Vote 2012: The AZPM Election Center