You can also leech more science and have more effective covert ops on civs that got eaten by your culture
What do you mean by these two? I understand tourism helps sway CS elections, but if a player is using a Level III spy on CS, the player will be winning elections most every time even when well behind in tourism.
high tourism pressure + no spy = no effect on CS election
0 tourism pressure + spy = strong effect on CS election
Problem it should be re-balanced so that high tourism pressure means a point of CS influence every turn, but frankly, since I struggle with tourism, I am grateful that this is not how it works!