Society's moral progress is going to diminish the republican party to obsolescence. I am a political junkie and have been for years and it is often humorous when the republicans are parodied in their ridiculous attempts to modernize their brand. They are losing the debate over abortion, gay marriage, healthcare, taxes, guns, how to fix the deficit, and immigration to name a few. The conservative ethics they fancy just don't appeal to enough young people anymore and their base is made up of aging old white people living in rural and suburban communities.
They know they have to compromise on these issues if they want to remain relevant in the next few decades. It will be interesting to see how exactly they do that, especially with their core conservative principles on social issues like abortion and gay marriage. I really wish that moderate republicans would break free from the party and become independents or libertarians or some other party and leave the extreme right conservative republicans alone to wither away. It'd be interesting to have a 3 party system in the US if this happened.
I think eventually most conservatives will evolve towards the left on social issues but remain conservative on government spending and taxes like libertarians are. The irony is that republicans have a dismal record on fiscal conservatism during their last few administrations in the White House.
I'm happy the country is moving to the left and I look forward to the day when the South and Midwest are as liberal as New England is. I'd still like people to keep their traditional ways however in that I don't want everyone talking and acting like a North East intellectual, just more to the left on social issues.