"We've been fooled previously," says Aaron Kall, director of debate at the University of Michigan. "We keep waiting for the pivot, but it hasn't yet materialized."
"Trump's had a rocky relationship with teleprompters," said Mr. Kall, director of debate at the University of Michigan. "He initially made fun of President Obama and Hillary Clinton for using them, but eventually embraced it to keep on message. It's anyone's guess as to whether Trump will use one on Friday."