If I remember right, when W was president, and the Dem's selected a candidate.... the market had rallied prior then dropped significantly when the Democrat candidate was chosen (or it was just clear who it would be).
John McLaughlin and other political pundits over and over repeated that drop proved the experience money people didn't trust the dem's and W was obviously better for the country financially. He would say 'it took economics off the table for the election'. Politically it did.
Assuming you believe 'they' can prop up the mrkt, or tank it for a purpose...
My point is just that if it is going to roll over, the in power politico's would rather it be after super tuesday, etc. So I'm bullish or sideways till then at least, as far as that goes. Baring major news events, etc.