There is a 3 point line on the basketball court that was shown when the main character enters the gymnasium to vote on election night in October of 1940.
The 3 point line was first experimented with in 1945 between Columbia and Fordham, a few times again between other collegiate teams years later, and again by the ABA in 1961. However, it was not instituted as a permanent rule until the NBA officially incorporated it into the game in 1979.
This scene takes place in 1940 and therefore the three point line shown wouldn't have been part of the basketball court.
The 3 point line was first experimented with in 1945 between Columbia and Fordham, a few times again between other collegiate teams years later, and again by the ABA in 1961. However, it was not instituted as a permanent rule until the NBA officially incorporated it into the game in 1979.
This scene takes place in 1940 and therefore the three point line shown wouldn't have been part of the basketball court.