CBS has given early renewals to three of its freshman drama series: Scorpion, NCIS: New Orleans and Madam Secretary have all been renewed for second seasons, the network’s entertainment chairman Nina Tassler announced Monday. “These freshman dramas have each made a big impact on key nights of the week,” Tassler said. “Creatively distinctive, the series are backed by strong showrunners with amazingly talented casts, and have resonated with a big, broad audience.”