Obviously the S&P 500 has a key support area at 1041 (black line) which was the late May low. If it breaks below 1041 then the next support area would be at 1009 (red line) which is the 38.2% Retrace from the March 2009 low of 667 to the April 2010 high of 1220. Meanwhile a drop below 1009 would likely lead to a deeper correction back to the 50% Retrace of 944 (blue line).
If the market is going to have any additional weakness it will likely be from now through the Fall. Historically the year before a Presidential Election Year has been favorable for the market going back to 1942 especially in the November through August time period as shown in the table below.
The Average Return has been 20.5% for the last 17 occurrences going back to 1942. The smallest Return was 5.7% in 1947 while the largest Return was 41.8% in 1987 which by the way preceded the October 1987 crash.