Stocks are set to end the week and month on a sour note, with the Dow, S&P 500 and Nasdaq all pointing to drops at the open on the last Friday before Election Day. Strong increases in personal income and spending for September reported by the government Friday failed to lift Wall Street's spirits. Investors are nervous about what will happen in the fourth quarter due to a lack of new stimulus from Washington. And Thursday night's big round of tech earnings largely underwhelmed Wall Street. Amazo