The preferential system of voting was first utilized by the Academy from 1934 to 1945. It was reintroduced in 2009, when the Oscars expanded the best picture field from five to 10 nominees ...

The preferential system of voting was first utilized by the Academy from 1934 to 1945. It was reintroduced in 2009, when the Oscars expanded the best picture field from five to 10 nominees ...

All votes are put in a preferential system, which is similar to ranked-choice voting in U.S. elections. Since 2009, there have been a maximum of 10 best picture nominees each year.