I watched the Mainly Socialist Broadcasting Company (MSNBC) to see why the Left thinks the ObaMessiah won-- DEMOGRAPHICS.
Chuck Todd (real surname?) said that the Obamanators did of course successfully, relentlessly trash Romney (with egregious distortions and prevarications) in the key states, BUT another key was sedulously mining NEW voters (such as 1 million+ LEGAL immigrants each year)...the previously unengaged. They used demographics to target potential voters, got them registered, and got them out to vote.
Meanwhile, the Republicans were beating each other up in a protracted primary and did not work the voters until very late.