GOP holds the House
Dems win the House by less than 12 seats
Dems win the House by 12-25 seats
Dems win the House by 25-38 seats
Dems win the House by 38+ seats
GOP gains 1 or more seats in the Senate (52-48 or more)
GOP holds the same number of seats in the Senate (51-49)
GOP loses seats but still holds the Senate (50-50 with Pence breaking tie)
Dems win the Senate (49-51 or more)