everyone is talking about how a democratic sweep could be bearish for stocks but the historical numbers are actually pretty interes since 1954, there have been 7 occasions when a republican president ended up with a democratic congress the s&p 500 was higher 12 months later in all 7 cases average return: +15.5% jpmorgan sees a blue wave as one of the weakest short-term outcomes for stocks, with an estimated impact between -0.25% and +0.50% obviously, history doesn’t guarantee anything but maybe political gridlock isn’t always the disaster people expect sometimes markets just want washington to stop changing the rules