In the long run, the success or failure of any strategy is shown in its end results. We have ample evidence that voting for conservatism doesn’t work. Perhaps you have evidence to the contrary? Some overlooked victory? If so, please feel free to share.
I have answered your question so now you give me examples and evidence of how not voting has led to more conservative government?
I don’t agree with the premise of the question. Electing conservatives to office, or having more conservatives in government, does not mean more conservative law, more conservative governance, or more conservative culture. A great example is our current congress. They’ve delivered nothing.
As for your example of amnesty, we have de facto amnesty. No real difference. And as for guns, I’m not convinced confiscation is in the cards regardless. Elements of the left would like to to be sure, but they didn’t when they held Congress and the Presidency a few years back. And frankly they could have.
Oh. I almost forgot to answer your underlying question of delivering some examples of conservative progress outside of the electoral sphere. I think the best (or at least the happiest) example is abortion. Abortion is pretty much as legal as it was back in 1973. Looked at from that perspective the ongoing efforts in the political realm to limit the barbarism have been a failure. HOWEVER the abortion rate has been dropping consistently and steadily since the early 80’s. So while our side has failed when it comes to a political solution, the prayer, the sidewalk counseling, the free ultrasounds have had an important impact on part of the culture. So while we may never see abortion illegalized, we are seeing a lot of lives being saved.