Deciphering the US congressional elections During the congressional midterm elections, the Democratic Party hopes to become a serious obstacle to Trump's domestic and international policies by gaining a majority in Congress. The House of Representatives has 435 seats and all will compete in the November 3 election. Representatives are elected for two years, so each mid-term election effectively determines the new composition of the House of Representatives. The Senate also has two legislators per state, totaling 100 representatives, their term of office is six years, and in the current election cycle, voting includes 35 Senate seats. In the current composition of the House of Representatives, the Republican Party has 218 seats and the support of an independent representative. The Democrats also hold 214 seats, so even a relatively small change in the political composition of the House of Representatives can result in a change in the majority in this house.