Thinking about "fiscal conservative" versus "fiscal liberal" I came up with a way to explain why I think of myself as a fiscal conservative, even though I'm way out of step with the Republican party.
A conservative, just going by the word itself, would be someone who wants to keep things the way they are, or using a slightly different sense of the word, would not want too many new things. When it comes to government spending, I think government ought to stick to things government ought to do, and not try to get involved in a whole bunch of new stuff. That makes me conservative. On the other hand, I think the things government ought to do, like fund education, might be pretty expensive.