
The yen opened lower at around 158.39-158.40 per dollar in Tokyo on November 5. Democrats won control of both chambers of Congress, and Trump said he would accept the midterm results, which eased political uncertainty and lifted New York stocks.
Falling crude oil on US-Iran peace-deal hopes also limited the yen's decline.
Easing political risk and lower oil lower inflation fears and support currency-linked feed costs for Korean buyers. A weaker dollar lowers the cost of dollar-denominated imports.
Not enough comparable past events yet for a historical read.
After 565 past bearish macro events, Crude Oil (WTI) moved a median -1.4% over 5 sessions (41% higher; middle half -5.9% to +3.0%), and -0.5% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.