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Ohio Senate

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Ohio House / Ohio Senate

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2018 Election Update

After the 2016 election, Republicans controlled the Ohio State Senate 24-9. Heading into the 2018 election, Republicans controlled the chamber 23-9 with one vacancy in a Republican-held seat. In the 2018 election, Democrats gained one seat and lost one seat, resulting in no change in the partisan composition of the Ohio State Senate.

Democrats flipped SD 3 (LDI: 11) and lost SD 33 (LDI: 4). EveryDistrict identified four other seats on the ballot as competitive and endorsed candidates in those four districts: Paul Bradley (SD 5), Sharon Sweda (SD 13), Louise Valentine (SD 19), and Lauren Friedman (SD 29).

Click here for a spreadsheet of LDI scores and 2018 Ohio 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.