Regardless of who wins the presidency, investors are better off focusing on top growth stocks.The U.S. presidential election is right around the corner, and many investors would be wondering which stocks could benefit most, based on who will become the next president.But basing your investment decisions on election results isn't a surefire recipe for success. And if you're investing for the long haul, even a four-year presidential term could conceivably be considered short-term in the grand scheme of things ...