What would you say is the major weakness of liberalism and what is the same for conservatism? I would say that economic illiteracy seems to be fundamental in liberalism and for conservatism the major weakness is not being able to fully embrace the concept of society and the benefits inherent there. Liberalism, in many cases, is devoid of common sense and any economic understanding. Conservatism, in many cases, is so focused on the independent individual that the benefits inherent in a society are greatly reduced in the name of "freedoms". Liberalism examples of a lack of common sense, "defund the police" and a lack of economic understanding, handing out money while fueling inflation that consumes more in higher prices than the money that was handed out. Conservatism examples of not embracing society due to preserving "freedoms", not being able to have campaign finance reform due to the "freedom" of free speech. Not being able to compromise in government so nothing can be accomplished (gun control, abortion, etc). In the U.S. liberalism means that the debt only grows because while they do want to raise taxes to pay for everything, they only want to raise it on the "rich" so nothing actually happens and they have no clue as to what the repercussions would be of doing that. Conservatives believe in lower taxes but would gladly reduce government expenditures to match those lower taxes but they don't control Congressional spending for long enough to be able to control that, so nothing actually happens either. Therefore, we get the worst of both worlds, low taxes and runaway spending with no one actually worrying about cost. Or rather, conservatives worry about it but can't control it and liberals don't understand economics enough to fully worry about it. I've used liberalism and conservatism so that the discussion isn't about Democrats vs Republicans. In todays environment Republicans don't represent conservatism and are only about the cult of Trump. If you want to picture Clinton vs Reagan, that's fine although Clinton understood economics more than the average Democrat (of today for sure).