Republican presidential candidates Ben Carson, Ted Cruz, Rick Santorum and Mike Huckabee are reportedly confirmed for a “North Texas Presidential Forum” on Oct. 18, 3 p.m., at Prestonwood Baptist Church, Plano, Texas. The debate is co-sponsored by the 40,000-member megachurch led by Jack Graham, former Southern Baptist Convention president, and the Faith & Freedom Coalition, a group founded by Christian…