Newt Gingrich has publicly backed mandated health insurance (President Obama’s preference) in two books:
From his 2008 book, Real Change: “Finally, we should insist that everyone above a certain level buy coverage (or, if they are opposed to insurance, post a bond). Meanwhile, we should provide tax credits or subsidize private insurance for the poor.”
From his 2005 book, Winning the Future: “You have the right to be part of the lowest-cost insurance pool and you have a responsibility to buy insurance… We need some significant changes to ensure that every American is insured, but we should make it clear that a 21st Century Intelligent System requires everyone to participate in the insurance system.”