Dark Carmodism*:

1992: UK Election, Major campaigning for re-election, No.1 = “Stay” by Shakespeare’s Sister
2004: US Election, Bush campaigning for re-election, Eminem releases “Encore”**

*(Carmodism has never been properly scientific in my hands: my allergy to mere human number systems skews my responses, I’m afraid)
**(But I still think this is significant, I just don’t know how yet exactly…)