Skip links

Arizona Senate

Arizona Senate

(Loading map data.)

Arizona House / Arizona Senate

Click a district for more information.

 

2018 Election Update

After the 2016 election, Republicans controlled the Arizona State Senate 17-13. After the 2018 election, there was no change to the partisan composition of the chamber. EveryDistrict endorsed Wade Carlisle (SD 6, LDI: -9) and Christine Marsh (SD 28, LDI: 1). Carlisle lost by 1712 votes (1.80%) and Marsh lost by 267 votes (0.20%).

EveryDistrict identified two other districts as competitive: SD 8 (LDI: -6) and SD 20 (LDI: -8). The Democratic candidates in those districts lost by 6821 votes (12.20%) and 2818 votes (3.80%) respectively. The Democratic candidate in SD 17 (LDI: -11) lost by 1744 votes (1.80%).

Click here for a spreadsheet of LDI scores and 2018 Arizona election results; click here for all 2018 election results.

Understanding the Map

EveryDistrict’s Legislative District Index (LDI) ranks state legislative districts on a scale from 100 to -100, using statewide elections data. Districts with a score of 100 would vote for statewide Democratic candidates by an average of 100 points (with the Democratic candidate receiving 100% of the vote); districts with a score of -100 would vote for statewide Republican candidates by an average of 100 points (with the Republican candidate receiving 100% of the vote). For a more realistic example, a district with a score of 10 would vote for statewide Democratic candidates by an average of 10 points (meaning we would expect the Democratic state legislative candidate to win with 55% of the vote compared to the Republican winning 45% of the vote).

EveryDistrict divides winnable districts into five categories. Dark blue districts lean Democratic and are held by a Democratic legislator. Light blue districts lean Republican and are held by a Democratic legislator. Yellow districts lean Democratic but are held by a Republican legislator; these districts represent the best pick up opportunities for Democrats. Pink districts lean slightly Republican, with a range of 0 up to -5; in the current political climate we’ve identified these districts as pick up opportunities for Democrats. Dark red districts are held by a Republican and have an LDI score of less than -5.

For more information about EveryDistrict’s LDI, please click here.

Updated LDI scores incorporating the 2018 election results will be released in spring 2019.