You should date someone with at least some reasonable overlap of ideals. If you wish to have a family unit, like conservatives certainly do, you need to have common ground and mutual respect or you will end up with yet another single mother raising a potentially negative statistic and father losing his child or bailing.
Oh no, you gotta figure out what sort of situation works for you. It is beneficial to find someone that has some overlapping ideals as yourself, heck most of your friends and you probably already have some overlap you may not have thought about.