Clearly issues play a role in developing peoples politics and voting patters. I just think elections come down to politics over stances on issues. Just look at Hillary on marriage, she has been very clear on the issue holding the "republican" stance every step of the way until 3 or 4 years ago, and only becoming vocal about her "support" in the last few months. On the other hand every republican candidate has at least at times told me exactly what I want to hear on taxes and spending. In practice they all are closer to Democrats then to delivering anything resembling a change in the direction I'd like. Look at an issue like minimum wage Democrats argue a higher minimum wage would be good and yet despite talking a good game they refuse to raise it beyond inflation. They will boldly take credit for raising it to $12 an hour, but they won't tell you that won't go into effect for 3 or 4 years, or that there are a lot of exceptions. Unless the voters make radical changes in voting habits the issues have been decided. I get the abortion debate, I have a strong stance, but if anything issues like that block any meaningful change from being discussed, exactly as the establishment politicians want it.