I've been doing the same since 1980.
Until recently the GOP held a majority of the House, the Senate, the White House and has appointed majority of federal judges at all levels, and, for a while, had a majority of state governors and houses.
And how is liberty doing today, in 2008?
The "system" is designed to appear to swing back and forth, to give the illusion that one side or the other is "winning". It is also very good at marginalizing any message or people that might gum up the works.
This is why the national GOP has been targeting Ron Paul for defeat, giving covert and not so covert support to primary challengers and even, if I'm not mistake, democrats, running against him in years past.
We are not welcome in the GOP, and any strides we might make within the GOP would be quickly neutralized.