Deckard says in his remaining time as mayor, he will continue to work on various infrastructure projects, such as installing new water lines.
Hamilton, who ran unsuccesfully against Mayor Mark Kruzan in 2011, will now face Republican John Turnbull in November's mayoral election.
Leinhoop, who joined the Columbus City Council in 2012, said he hopes to alleviate the “climate of uncertainty” he thinks has dominated the city's politics.
WFIU/WTIU will be hosting live election coverage after the polls close at 6 p.m.
Follow our live blog for 2015 primary election updates throughout the evening.
Martha Lake currently works as the Howard County Auditor.
Hamilton says the voters have spoken, but now it's just a matter of waiting.
Around 5,000 people have cast ballots early, in-person or through absentee voting.
Legislators could convene for a one-day session in June. Read more in our morning roundup.
As California's drought draws national headlines, an Indiana University professor finds some key perceptions about conserving water at home.