Complex sentence: Although the AP would begin the first "weekly" writers'poll in 1936, and UPI would not follow until 1950, United Press did conduct a season's end poll in 1935.
Split into simpler sentences: Although the AP would begin the first "weekly" writers'poll in 1936, and UP would not begin a weekly poll until 1950. The United Press did conduct a season's end poll in 1935.