If Rick Santorum wants to keep Mitt Romney from wrapping up the Republican nomination before the convention, he should encourage Newt Gingrich to stay in the race, not drop out.
Not everyone buys this theory, I admit. The doubters include Santorum — who keeps shoving Newt toward the exit — as well as quite a few leading conservatives, including Family Research Council head Tony Perkins and influential blogger Erick Erickson. They want to see a two-man contest between a "Massachusetts moderate" and a dyed-in-the-wool conservative.