These people would never vote GOP, for bigger government.
We don't really care who makes it bigger. We won't empower or advocate, through our votes, no matter how few we have, anyone who makes government bigger. If there's no one on the ballot who will reduce the size, scope, cost and intrusiveness of government, many of us simply won't vote. And voting for someone who will make government even the slightest bit larger is simply out of the question.
It's really not all that hard to figure out.
The root word is liberty, not liberal.