Catherine Engelbrecht, seen here in 2015, founded the controversial nonprofit True the Vote. A new lawsuit alleges that Engelbrecht and True the Vote defamed a small company that makes software for election workers. Anadolu Agency/Getty Images hide caption toggle caption Anadolu Agency/Getty Images Catherine Engelbrecht, seen here in 2015, founded the controversial nonprofit True the Vote. A new lawsuit alleges that Engelbrecht and True the Vote defamed a small company that makes software for election workers. Anadolu Agency/Getty Images Konnech, a small Michigan company that makes election logistics software, says a “smear campaign” whipped up by the controversial group True the Vote has led to death threats and forced the…