Harley has a 93 day cycle that marks most dramatic bottoms throughout the last two years (Brexit, election, etc.) That ended on 3/22 with a +/- 2 day window. That implies the bottom is in by the close of the day regardless of what the Obamacare vote is and the pivot to taxes. We may yet sell off into a low today, we will have to see. However, Curry cycle analysis marked a sharp down move followed by sharp up move after options expiration as well.
I am looking for SPY to work its way over yesterday's high at 235.34 and rally from there, but close the day on a retracement to the 235.34 area. That may be too much for one day to accomplish, but my money is on that scenario. If we recover as rapidly as the Curry cycles say, it shouldn't be too much and we will be on our way to new highs.