As reported earlier, some of the Green and Libertarian candidates for statewide Ohio office failed to qualify for the primary ballot of their own parties, because their petitions were determined to lack 500 valid signatures. Therefore, the two parties have filled those vacant slots with new write-in candidates in the primaries. Ohio law doesn’t permit a candidate who tries and fails to get on a primary ballot to then file as a write-in. Therefore, the parties had to recruit different individuals to run. See this story.