Following the 2019 Dayton shooting, Keller posted an essay on her personal Facebook page on August 4, 2019. This essay blamed the Dayton shooting on the breakdown of the traditional family (including due to transgender rights, gay marriage and "drag queen advocates"), video game violence, recreational marijuana, open borders, disrespect of military veterans and law enforcement, failed school policies, former President Barack Obama, and "snowflakes, who can’t accept a duly-elected President". She later deleted the post. As a result, many local officials (including Jane Timken, chairwoman of the Republican Party of Ohio) have called for Keller to resign. Keller, who is a candidate to replace fellow Republican Bill Coley in the state senate, countered, "Establishment moderates have never been fans of mine because I ran against their endorsement and won. As the only conservative in this race, I will be taking my Senate campaign to the voters to decide." In 2020, she lost the Republican primary.