There are signs that well-known Republicans are less than enthused about Mike Huckabee's recent surge in popularity. Rich Lowry, editor of the National Review, went so far as to issue an anti-endorsement:
"Huckabee is an under-vetted former governor who is manifestly unprepared to be president of the United States. [...] His vulnerabilities in a general election are so screamingly obvious [...].
"The GOP’s social conservatism inarguably has been an enormous benefit to the party throughout the past 30 years, winning over conservative Democrats and lower-income voters who otherwise might not find the Republican limited-government message appealing. That said, nominating a Southern Baptist pastor running on his religiosity would be rather overdoing it. "
For some of Huckabee's comments regarding his party, read more.
According to the Boston Globe, Huckabee told crowds in Iowa:
"I love my country, and I love it more than the Republican Party. The Republican Party needs to be changed, and there are some people who are not fond of me saying it."
There is another insurgent candidate the GOP establishment has traditionally disliked—John McCain, aka the "maverick." Given this split in allegiance, it seems to me that the usually cohesive Republicans are acting a bit more like the sometimes-quarreling Democrats this year.