I definitely wouldn’t triple major, and some schools won’t even let you. If there are any classes that don’t work out, you choose to do an abroad program, or there are unforeseen scheduling conflicts (especially senior year when you may need some really specific classes) it may not all fit like you think it will which would just be frustrating and disappointing after all the work and planning you would have done. In my personal opinion, I’d say you find a way to not need both public policy and political science. While they definitely have their differences and important distinctions, there is a lot of overlap between those majors. Additionally, a lot of philosophy is related to political thought, and your economics classes will also equip you well in a political setting. To save yourself from potential frustration - when for most employers or grad schools a double major and minor is definitely sufficient - I’d consider consolidating. It’s more important that you leave college with the most valuable skills rather than the most degrees.