How brutal is the fight for power at the presidential level? Joe Scarborough lays out his plan for what Mitt Romney should do to Rick Santorum if he won't get out of the race before Pennsylvania on April 24th. 

If I were Mitt Romney today, I would go up with millions of dollars of ads in Pennsylvania today and let him know you know what, you stay in this race... I'm going to reduce you to rubble in your home state...