EXCLUSIVE: “Argo” director Ben Affleck has tapped “The Lucky One” star Taylor Schilling to play his wife in Warner Bros.’ political thriller, which has also added character actor Tate Donovan and “The Office” thesp Nelson Franklin to its ensemble cast.Affleck stars as Tony Mendez, the CIA exfiltration expert who created a fake Hollywood production in order to rescue six Americans from the Tehran hostage crisis. Schilling will play Christine Mendez, a former teacher who worries about her husband while he’s off on a dangerous mission. Donovan will play Bob Anders, a U.S. embassy consular officer in Tehran, while Franklin will play a reporter. George Clooney and Grant Heslov are producing the Chris Terrio-scripted pic through their Smokehouse banner along with David Klawans and Affleck. Schilling, who will soon be seen opposite Zac Efron in WB’s upcoming romantic drama “The Lucky One,” is best known for starring on NBC’s “Mercy.” Donovan is no stranger to working with actors-turned-directors, having previously co-starred in Clooney’s “Good Night, and Good Luck.” Franklin, who starred on the Fox series “Traffic Light,” has previously appeared on the big screen in “Scott Pilgrim vs. the World” and “I Love You, Man.” Gersh reps Donovan and Schilling, who’s also repped by Molly Madden at 3 Arts Entertainment. Franklin is repped by WME and Principato-Young.