CNN called the atmosphere in the White House on election day "cautiously optimistic" According to one US administration official, Donald Trump "was in great spirits" yesterday. A TV channel source called the American leader an "eternal optimist". Today in the United States the mid-term congressional elections are held. US citizens elect 35 of the 100 senators and all 435 members of the House of Representatives. 36 states will also hold elections for governor. In addition, most regions will have to elect attorneys general, members of local legislative bodies, and other officials.