Southern Arizona’s 2nd Congressional District provided one of the biggest surprises of Election Night, and the following days, as the lead for Democratic U.S. Rep. Ron Barber and Republican challenger Martha McSally went back and forth with razor thin margins.

The political makeup of Arizona’s congressional delegation could swing to either party in next month’s election as three of the nine available seats continue to be slug-fests featuring millions of dollars of attack ads paid for by political parties and outside groups.

The glowing praise U.S. Sens. Jon Kyl and John McCain heaped on Richard Carmona 10 years ago led to some harsh words by Arizona’s senior senator for the Democrat who hopes to be his seatmate.

The political action committee of Republican Gov. Jan Brewer is paying for mailers for or against candidates in two more Arizona congressional races.

When Democratic U.S. Rep. Ron Barber won a slam-dunk special election in June against the same opponent who almost defeated his predecessor and boss, former Congresswoman Gabrielle Giffords, many political consultants chalked it up to the “Gabby Effect.”

GOP congressional nominee Vernon Parker got a boost today from U.S. Rep. Darrell Issa, R-Calif, who came to Tempe to endorse Parker and invite him to serve on the House Oversight and Government Reform Committee if elected.

Republican congressional candidate Jonathan Paton pointed to his military service and years served in the Legislature and his Democratic opponent Ann Kirkpatrick painted herself as a bi-partisan bridge builder. But eventually their Thursday night debate in Casa Grande for Arizona’s 1st Congressional District turned to the negative images each has been proffering about the other.

The battle between former Surgeon General Richard Carmona and Congressman Jeff Flake has officially become one of nation’s top U.S. Senate races.

Republican congressman Jeff Flake and Democrat Richard Carmona have agreed to three one-hour debates around Arizona this month as they vie for a U.S. Senate seat.

The Democrat who won the primary in Arizona’s 6th Congressional District ditched the party on Thursday and said he will seek election as an independent.