Greg Abbott claims 50 election fraud convictions since 2002 50 cases voter impersonation Greg Abbott claims 50 election fraud convictions since 2002 voter impersonation voter impersonation voter impersonation voter impersonation voter impersonation claimed voter impersonation voter impersonation voter impersonation is rare PolitiFact 50 cases voter impersonation voter impersonation voter impersonation voter impersonation voter impersonation is rare According to PolitiFact