Not only will Donald Trump’s replacement for the Patient Protection and Affordable Care Act(PPACA) be “a lot better” according to thebillionaire’s campaign adviser, but it will be supported by membersof both parties in Congress.

Whatever Trump would offer in terms of a national health carepolicy “must be bipartisan,” Sam Clovis, the national co-chair ofthe Trump campaign, told the New York Times last week.

Clovis’ claim echoes an oft-repeated criticism Republicans havemade of Obamacare: It was approved without a single GOP vote inCongress. The multiple GOP efforts to repeal the PPACA havesimilarly failed to earn support from Democrats.

In the event that Trump one day occupies the Oval Office, it’shardly even clear that many Republicans would support whatever heproposes to replace the PPACA. As has been painstakinglydocumented, many of Trump’s pronouncements on health care run directlycounter to conventional GOP doctrine.

But because the prospect of a Trump presidency would sothoroughly upend conventional political wisdom — includingpolls that now suggest the GOP’s Congressional majority would beseriously threatened if the party nominates Trump — it is anybody’sguess how members of Congress would work with such a president.

The promise of bipartisanship reveals a key distinction betweenTrump and his chief rival for the nomination, Ted Cruz. Whereas thelatter promises to vindicate conservative free-market ideology,Trump fashions himself a post-partisan figure, borrowing parts ofboth parties’ traditional ideologies and promising to win thesupport of Democrats by protecting Social Security, Medicare andMedicaid.

And although Trump made arguably the most extreme anti-abortioncomment by a major candidate in recent memory when he suggestedwomen who obtain abortions should be punished if the procedure isoutlawed, he has also deviated from the Republican party line onPlanned Parenthood, saying the nonprofit has “helped millions ofwomen” through its non-abortion medical services.

The unpredictability of Trump’spositions and his utter lack of commitment to the GOP,combined with his terrible polling numbers when matched againstHillary Clinton, explains why many leading Republicans areincreasingly maneuvering to stop him from winning the partynomination.