Republican opposition to the Democrats’ 2010 health care overhaul law is intense, with 73% of Republicans having an unfavorable view of it. By contrast, 62% of Democrats view it favorably.

The survey also found that most Republican voters don’t agree with the attack on GOP presidential candidate Mitt Romney that the health care law he signed as governor of Massachusetts is similar to the federal law. Some 30% said they felt Mr. Romney’s views on health care were akin to President Barack Obama’s, but almost half said the former governor’s views are different, and 22% didn’t answer.