Stocks slightly weakened Monday afternoon. Still, the market was little changed ahead of the presidential election. The Nasdaq was up a fraction, while the Dow Jones industrial average and S&P 500 slipped 0.2% each. Volume continued to track sharply lower on both major exchanges. Time Warner Cable (TWC) gapped down, tumbled 7% and sliced its 50-day line after posting disappointing Q3 results. Video subscriber losses grew and broadband growth