Immigration is a huge difference. Earmarks are an increasing “right’ of those in office. Another compromising point. There needs to be a moratorium for 3-5 years on earmarks. Seriously.
We must remake the Republican from within to really change the internal dealings they make to gain office.
Human nature will not change.
The public opinions really will not change much.
If you want someone who thinks like you to win?
RUN YOURSELF!
Otherwise, politics is and always will be the art of compromise.