The “P-factor” is a force that cannot be ignored by the pilot of an airplane. Depending on the directional rotation of the propeller, it causes the airplane to yaw to the left or right during take off.
The Republican party has a “P-factor” of its own which cannot be ignored.
Say what you will about Ron Paul. He is and will be a factor in the 2012 presidential election. He will not win the GOP nomination. He is running to advance his core beliefs and he must be heard within the party or he will be heard as an independent outside the party. This would virtually assure Obama’s reelection.