That's not enough this year, because the GOP has adopted proportional delegates. Romney can't end this fast like the vile McCain did in 2008. This thing could remain a 4-way race through May. Perry and Paul have plenty of cash to stay. Unprecedented.
That gives him support from a variety of upscale republican smokers, closet conservative/smokers, hippies, collegiate smokers, and independent smokers.
You may laugh but I think this reflects a lot of his support. I sure do. I can think of no other reason a band of gypsies follows him around like the Grateful Dead.