Republicans could find themselves left out of significant state legislative representation in Southern Arizona after the general election in November.

That’s because Tuesday’s primary election set the stage for the unlikely mathematical possibility that Democrats could hold 20 of 21 legislative seats aligned with Pima County.

The possibility comes about because of uncontested races in several districts and challenges to Republican incumbents. Even before primary voting, lack of GOP opposition assured Democrats of four of the seven Senate seats and five of the 14 House seats with Pima County ties.

Another two Senate seats and five House seats are in Pima County districts with Democratic voter registration advantages.

In Tuesday’s contested legislative races:

  • In District 3, Democratic Sen. Olivia Cajero Bedford easily defeated challenger Maria Garcia. Cajero Bedford had 66.9 percent of the vote and faces no general election opposition to keep her state Senate seat.

  • In the District 4 primary for two Arizona House seats, Democrats Charlene R. Fernandez and Lisa Otondo had 32.6 percent and 35.9 percent, respectively, to win their seats, with no opposition in the general election. Runnerup was Juan Carlos Escamilla, at 31.1 percent.

  • In the Arizona House in District 9, Democrats Victoria Steele had 35.6 percent and Mohur Sarah Sidhwa 35.0 percent to take the nominations. Dustin Cox was the runnerup at 29.1 percent. The winners face one Republican opponent, Ethan Orr.

  • In District 10, Democratic House incumbent Rep. Bruce Wheeler had 38.8 percent and Stefanie Mach won 36.5 percent, to take the nominations, with Brandon Patrick the runnerup, getting 24.4 percent. The winners face incumbent Republican Rep. Ted Vogt and newcomer Republican Todd A. Clodfelter in the general election.

Your Vote 2012: The AZPM Election Center