We need some major election reform. Drop the Electoral College, it obviously doesn't do what it was designed to do. Lower age of candidacy for the House from 25 to 18, Senate from 30 to 25, and Presidency from 35 to 25. Add experience requirements, like at least one term in any state or federal level elected office, x number of years as a commissioned officer in the military, or a bachelor's degree in American history or political science. We have to make sure that any futire president has some understanding of how our government functions.
I'm not sure about the lowering of the age. People do actually mature just in general as they age. I'm not sure I want an 18 year old in federal politics and I know I don't want a 25 year old leading the country (I could maybe go with 30). They've even shown studies that people change a lot from 20-30 and more solidify around 30. Yes, that means that the younger politician would be more malleable, but it also means you may not know what you are voting for later on. And they haven't had time to really experience life and understand things better (I know even at 25 there are things I'm wiser about now).