Mitt Romney is still 571 delegates short of clinching the Republican presidential nomination, but he’s already telling President Obama to “start packing.” MSNBC’s Alex Wagner and the NOW panel – Alice Stewart, former Santorum press secretary, Politico’s Maggie Haberman, The Daily Beast’s Patricia Murphy, and New York Time Magazine’s Hugo Lindgren – discuss the Obama-Romney matchup heading into the general election and both campaigns’ strategies.April 18, 2012