In this task, you will be shown an extract from a movie plot and a question. You need to provide the correct answer for it. Short answers containing words that are present in the passage are preferred.
Q: It's convention time and front runner Secretary of State William Russell (Henry Fonda) finds himself pitted against Senator Joe Cantwell (Cliff Robertson).Russell is a man of conviction and hopes to elevate politics beyond the personal attack. Cantwell is a political street fighter who practices a "means justifies the ends" strategy, willing to crush any opponent.For ex-president Hockstader it's Russell's inability to act that's his flaw. Russell, a man of conscience, sees too many sides to issues, he is paralyzed by analysis. Hockstader, a practical man, is ready to endorse Cantwell.In the end both candidates make discoveries about themselves, one accepts his weakness, one is defeated by his strengths and in the end The Best Man wins.Watch this film and see how little has changed in the 40 years since its production. Especially note the "role" of women!, Question: Who is Russel's opponent?
A:
Answer: Senator Joe Cantwell