Stock market volatility may set in as the U.S. goes into pre-election mode. While Romney is commonly believed to be better for business, he also brings uncertainty over Federal Reserve policy. Markets don’t like uncertainty. And it’s not even clear if the market likes Obama.

Major indexes are still in a downtrend as last week’s rally was reversed going into the weekend.

It would be unwise to place market bets based on the outcome of the election. Anything is possible here.