The violent plot against lawmakers has extended beyond Minnesota, with police revealing that the suspect, Vance Boelter, had a list of 45 elected officials in notebooks found in his car. Among those targeted were five Democratic representatives from Ohio: Joyce Beatty,

Vance Luther Boelter, the man suspected of gunning down Minnesota Rep. Melissa Hortman and her husband and shooting state Sen. John Hoffman and his wife, ended Sunday night with his arrest.

The man charged with killing one Minnesota lawmaker and wounding another in what prosecutors have described as a meticulously planned attack, had dozens of apparent targets, including officials in at...