USATODAY.com - Poll: Democratic candidates open large lead in congressional races

USATODAY.com - Poll: Democratic candidates open large lead in congressional races:

Big change in a month:

"On the question of which party's candidate would receive their vote if the election were held today, Democrats held a 23-point lead over Republicans among every type of person questioned — likely voters, registered voters and adults. That's the largest lead Democrats have held among registered voters since 1978 and a jump from last month's 48%-48% split among likely voters."