Are Republicans Serious About Repealing the Individual Mandate?

Here's an argument that they are not. Insurance companies are a huge beneficiary of health care reform and are donating heavily to the Republican Party. Why would they want to repeal a cash cow? They do want to repeal some of the regulations put in place limiting their ability to deny coverage to people with pre-existing conditions, etc..., but those tend to be popular. Republicans risk losing electoral support in 2012 if they try to revoke them.