Congressional elections determine who represents your state in Congress. They also decide which political party—Democratic or Republican—will hold a majority in each chamber of Congress for the next two years.
How Congressional Elections Work
Congressional elections occur every two years. Voters choose one-third of senators and every member of the House of Representatives. Midterm elections occur halfway between presidential elections. The congressional elections in November 2018 were "midterms."
Congressional elections use the popular vote to choose winners. They don't use the Electoral College, which is used in presidential elections.
U.S. House of Representatives
Members of the U.S. House of Representatives serve two-year terms. All 435 members get elected every midterm and presidential election year. A representative must be at least 25, a U.S. citizen for at least seven years, and live in the state he or she represents. The number of representatives a state has depends on its population. Each representative serves a specific congressional district. Find your representative.
Senators serve six-year terms. One-third of senators get elected during each midterm and each presidential election year. A senator must be at least 30, a U.S. citizen for at least nine years, and live in the state he or she represents. There are 100 U.S. senators, two from each state. Find your senators.