Do explain, he purred...

Imagine a bit of Will F Buckley Jr drollery, slumped into a heap in his chair, pencil in his mouth, interviewing Kathleen Parker:

“Parker Spitzer” is intended to be a nightly news-based conversation about a mix of topics, with a mix of opinions. It pairs Mr. Spitzer, a liberal with a prosecutor’s bent, and Ms. Parker, who calls herself a rational conservative.

Are, there, therfore, Ms. Parker, "irrational conservatives as well?"