Completing this quest will add a point to the total gift collections for the capital city leader standing next to Kwee Q. Peddlefeet. This counts as one vote for the popularity of that leader. At the end of the Love is in the Air seasonal event, the capital city leader with the most gift collections will have Kwee Q. Peddlefeet stay by them to buff players for another week.
You can ask Kwee Q. Peddlefeet about the gift voting standings. He gives the number of turn-ins for each participating city leader and the totals for each faction.
Disproportionate voting stacked toward one particular leader will give either faction that does so a better chance of winning.