I'm more concerned with their financial decisions than their annual income, personally. Someone can have a good income and make terrible financial decisions. I've made good financial decisions for the most part. My student loans are the only debt I have. Why would I voluntarily tie myself to someone who has made poor financial decisions and has destroyed their credit? My credit would be on the line for all major purchases. Heck if we were to get married, my credit ranking would actually drop. I don't want to be paying for someone else's dumb decisions, nor do I want my credit destroyed b/c everything would have to be in my name, on my credit, and the person has already proven they don't care about their own credit, like they're really going to care about mine more than they did their own? You can be poor and financially stable (which is me), and you can make over $100k per year and be up to your eyeballs in debt from bad decisions. I'm more worried about financial stability and making smart financial decisions than I am someone's overall income. Just my two cents.
RE: Would you turn down a potential partner because they don't make enough money?