Types of elections for the legislative branch in the US Congress

Congress is made up of two dwellings, the dwelling of Representatives and the Senate. Members of the dwelling of Representatives are elected every two years. Members must be at least 25 years of age, have been a United States citizen for at least seven years, and a resident of the state they wish to represent. Each state is represented by two senators for six years. Members of the Senate must be at least 30 years of age, a citizen of the United States for at least nine years, and reside ...