There is no “may” about it.
Romney is going to get hammered by both the right(in the primaries) and the left(if he should win the primaries) over Romneycare. He going to need to be a heck of a lot more slicker and more slippery than he's been so far if he is to survive that minefield.
Not only that...but in a poll from several years back, moderates were 11% less likely than conservatives to vote for a Mormon prez. [That's where McCain especially surged ahead...he got the moderate vote]