Michael Barone’s analysis of the so-called Blue Wall is must-read. Barone opens with this:
Do Republicans have a realistic chance to win the next presidential election? Some analysts suggest the answer is no. They argue that there is a 240-electoral-vote “blue wall” of 18 states and D.C. that have gone Democratic in the last six presidential elections.
A Democratic nominee needs only 30 more electoral votes to win the presidency, they note accurately. A Republican nominee, they suggest, has little chance of breaking through the blue wall. He (or she) would have to win 270 of the 298 other electoral votes.
Democrats do have an advantage in the electoral vote, because heavily Democratic clusters clinch about 170 electoral votes for them, while Republicans have a lock on only about 105. But the blue wall theory, like all political rules of thumb, is true only till it’s not. And this one could easily prove inoperative in a competitive 2016 race. [“Democrats’ ‘Blue Wall’ Not Impregnable to Republicans — If They’re Smart,” AEI.org, February 17, 2014]
Barone then demonstrates the flimsiness of the “Blue Wall.” Here’s my take:
The right GOP candidate with the right message can win some or all of the States that Obama won narrowly in 2012. In the table below, they’re the States whose electoral votes are highlighted in pale blue in the Tossup column (Florida, Ohio, and Virginia) and the States in the Swing Blue column (Colorado, Iowa, Michigan, Minnesota, Nevada, New Hampshire, Pennsylvania, and Wisconsin). If the GOP candidate were to hold all of the States won by Romney and take the additional Tossup and Swing Blue States, he or she would garner 347 electoral votes — a resounding victory.
Source: Derived from this table at Dave Leip’s Atlas of U.S. Presidential Elections.