Answer: it has a strong effect. The president and the Congress experience a kind of honeymoon if the popularity of the president is high after the election. The so called "honeymoon" period can be very productive.
Explanation: When a president's popularity tends to be highest right after an election. The president's love affair with the people and with Congress can be consummated. Franklin Delano Roosvelt enjoyed a honeymoon in his first 100 days. From March to June 1933, FDR obtained from a willing Congress a vast array of new laws creating new agencies and authorizing new powers. But that was also because America was in one of the worst depressions ever.
If you said Nashville, you'd be wrong. The right answer is Bristol, Tennessee. Bristol is on the Tennessee and Virginia border, where Appalachian mountain folk music has been popular for generations.