With two days before Election Day, the final NBC News map shows Obama remaining above the 270 electoral-vote mark, with a 286-157 lead over McCain. Last week, Obama held a 286-163 advantage. Our changes: We moved Montana and North Dakota (which has same-day voter registration) from Lean McCain to Toss-up. In addition, we moved Michigan, Minnesota, Wisconsin, and New Jersey (the latter of which we should have moved a couple...