Gerson's Fallacy

Poulos counters:

A calculating and practical liberal administration will be much less of a torment for conservatives interested in clarifying and revitalizing their intellectual position than an administration driven by the passionate pursuit of the Democratic party platform. Obama has shown plain enough for anyone to see that he’s a liberal. Really there are only two dangers that Obama poses to conservatives one, perhaps he can turn huge new numbers of Americans into liberals by sheer force of personality, and two, perhaps he can do the same by actually winning arguments with conservatives on the merits. One way Obama will not be able to do either of these things is by cementing his credentials as a party hack. He knows this. Does Gerson?