I stopped equating party label with idealogy more than 10 years ago. The days of thinking Republican = Conservative are long gone.
The Republicans who have been in control the last 10-12 years are Neo-cons, who are NOT fiscal or governmental conservatives in any way.
The Republicans will only begin to yield power again when they return to thier true roots, low taxes, small government, and non interventionalism.
The voters know thier phony, so if your going to put liberals in office, you might as well get a REAL one (Obama), not a pretender.