Conventional wisdom is that the Republican party wants Hillary to win the Democratic nomination because they think a Republican can beat her in the presidential election in November.
Wrong. They know that if she is the nominee the election won't matter.
They have become familiar with her relentless corporatism and now, with her vote for the Lieberman/Kyl Amendment, they are comfortable with her militarism as well. If she is the Democratic nominee then, no matter who wins in November 2008, the neo-cons will have one of "their kind" in the White House for four more disasterous years.
Check out David Mizner today on The Huffington Post, and in a similar train of thought David Bromwich.