The momentum shows no sign of slowing. Mr. Obama on Monday said debate is healthy and is slated to host a town-hall meeting of his own in New Hampshire today.
Liberal groups have accused conservative organizations of planning attacks at the town-hall meetings, many of which have turned into heated shouting matches.
AARP, one of the largest advocacy groups in the debate, announced a large television advertising campaign intended to counter Republicans’ claims that the bill would ration health care.
• Jerry Seper contributed to this report.