According to AARP,
"By early September, more than 150 Republican candidates had pledged support for cutting funding, according to the conservative website DeFundit.org.

If the legal challenges from the states succeed and the individual mandate is eliminated, all the most popular new benefits and consumer protections of the law could evaporate — from guaranteed coverage for people with preexisting conditions to the ban on lifetime coverage limits. These benefits and protections depend on having healthy people, as well as the sick, buying insurance to spread the risk and reduce costs.

For the same reason, new federally required benefits like free preventive care and limits on out-of-pocket expenses would not be possible. Coverage through the exchanges would be more expensive, and subsidies, if available at all, less generous. If funding were significantly cut, it would be difficult to even establish exchanges."
Read more: http://www.aarp.org/health/health-care-reform/info-09-2010/if_health_care_reform_unravels_.html

It is true that it takes all provisions in the federal bill to reduce the cost of health care. However Oklahoma and Arizona already repealed the individual mandate through a referendum.

First of all, this referendum won't count since federal law always trumps state law. I expect the federal government to declare the referendum unconstitutional within the next month. It is also unlikely that the courts will find the law unconstitutional.

Second, unlike the original House bill, the Patient Protection and Affordable Care Act will establish state health exchanges. If one state decides to repeal laws, it will mostly affect this particular state and not its neighbors. Getting rid off the individual mandate will result in people gaming the system which will increase premiums for the ones who permanently pay into the system. Arizona's and Oklahoma's health care systems would be in ashes within two years while states that go further and expand their systems to a cost-reducing comprehensive single payer health care will thrive.

We will end up with the system that Republican proposed in the beginning. States will be allowed to do their own thing, may the better system win.That is what you would think. However, we are talking about millions of lives at risk because the Republican Party, the health insurance industry and PhRMA are more interested in keeping the previous system that exploits millions and costs us between 47,000 and 100,000 lives. Therefore the federal reform bill in its current form must remain the base in all states. I hope people will vote progressive and for President Obama in 2012. If Obama loses, we will ultimately lose all the progress that has been made the last two years and this is something we cannot afford.