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In this video tutorial, the instructor teaches how to code an election contract to ensure a free and fair election. The process begins by defining a custom data type called a struct, which helps group related data types. A candidate struct is created to track a candidate's name and vote count, while a voter struct records whether a voter has voted and their selected candidate. The contract's owner, who has special rights to authorize voters, is also tracked. Additionally, the tutorial covers creating a mapping for storing voter information and a dynamically sized array for candidates, initialized at construction, as well as managing the election's end time.
