I noticed an interesting trend around my house in FL. Yards with Romney signs have other republican candidates as well or just Romney.
Yards with signs for Democrat candidates often don’t have Obama signs. It’s like they are embarrassed to admit they like the guy. I see Obama signs in random spots along the road, but not in yards too much.
Same in the parts of MA I travel in. Most Warren sigs are without matching Obama signs. The one exception I found was a area with a descent Jewish population.