False dichotomy. Since Brown isn't a "liberal," the question is moot.
You win by knowing which districts you can run a real red-meat conservative in and which districts you have to run someone who is centre-right in. The candidate you can win with in South Carolina or Idaho is not the one you can win with in Massachusetts or California - and that cuts both ways.
Seriously, if you're not smart enough to figure this out, then you're American Independalist Party or whatever is never going to get off the ground.
Pro-abortion. "No litmus test" for judges. Helped craft and pass the RomneyCare socialized medicine scheme. Fully staffed with high-level Romney insiders. Believes in the global warming scam. Makes no bones about his desire to cut deals with the Democrats in the Senate.
If it walks like a duck...