If Romney wins SC by a large margin, every candidate except maybe Ron Paul will be suspending their campaign.
Ron Paul is never going to suspend his campaign. He is being very crafty with his actions. Paul is being totally overlooked in this cycle when everyone should be very concerned about what he is trying to pull off. He is gaming the GOP system to get a brokered convention using arcane party rules and trying to get as many of his people as possible as delegates in different states. We could conceivably have a President Paul if people don’t wake up.