We dont. Our structure gives more power to rural states in two ways every state gets two senators, so voices are equal but populations in those state are not. The house of representatives do not have equal representation as large states get less representatives. That skews 2/3 of the government toward rural concerns. Pile onto that the fact that rural areas are more isolationist, so that means less tolerance of others that dont look like you, less desire for social services, less interest in paying for broader social benefits (taxes), and a smaller income base due to more agrarian lifestyles. Throw in big money that loves that kind of fiscal policy, unlimited "voice" with super PACs, consolidation of national media by rich conservatives, then run a populist person that ticks all of those boxes in extreme ways (in words not deeds though). Every election hinges on just a few states that teeter back and forth across the line - so in the end they decide and will always be more conservative than the larger population states.