Arizona
5 Democratic seats - 4 Republican seats
District 1: R+20.87
Republican vote sink district, anchored in northwestern Maricopa county, attaching itself to Prescott and Mohave County. Incumbent would likely be Paul Gosar (R), from Prescott.
District 2: R+11.66
Another Republican vote sink district, within parts of western Maricopa county and the southwest corner of the state. Incumbent would likely be Trent Franks (R), from Glendale.
District 3: D+6.36
A Democratic seat based primarily in the city of Glendale, with small portions of Phoenix proper. More or less an open seat, although either Franks (R) or Gallego (D) could legitimately claim to be incumbents in this seat.
District 4: D+5.75
Another Democratic seat, based in Phoenix, stretching from Scottsdale to a few "urban villages" across the river. Incumbent would likely be Ruben Gallego (D), from Phoenix.
District 5: R+13.95
A Republican vote-sink district entirely within Maricopa county, situated in the northeast suburban and exurban portions of the county. Incumbent would likely be David Schweikert (R), from Scottsdale.
District 6: D+5.73
A Democratic seat based in Tempe that contains the Democratic friendly parts of Gilbert and Chandler, that stretches to a Native-American reservation south of Phoenix. Incumbent would likely be Kyrsten Sinema (D), from Phoenix.
District 7: R+12.13
A Republican vote sink district that stretches from the Phoenix southern suburbs to Tucson's northern suburbs. Incumbent would likely be Andy Biggs (R), from Gilbert.
District 8: D+4.59
A Democratic seat based mainly in Pima County, and Tucson proper. Incumbent would likely be Raul Grijalva (D), from Tucson.
District 9: D+3.99
A Democratic seat that stretches from Flagstaff to the Navajo Nations in the north to east Tucson. Incumbents Tom O'Holleran (D) and Martha McSally (R) could both be considered incumbents in this district.
