Writing for Commentary‘s “Contentions” blog, Jonathan S. Tobin questions the recent emphasis in presidential election coverage of the president’s superior “ground game.”

In the last week, there have been two consistent themes being sounded by the Democrats. One is the assertion that Mitt Romney’s momentum has been halted and even reversed. The other is that their ground game is so good that the president is bound to win the election no matter what the polls say. These two talking points are closely related, since the polls that liberal analysts cite in order to assert that the president is edging back into the lead are based on assumptions about the composition of the electorate that are only possible if the Democrats match or even exceed the massive turnout they achieved in 2008.

Why pollsters would assume that a correct sample for the 2012 election would mirror the 2008 results when Obama rode a wave of disgust for the Bush administration and belief in his promise of hope and change is a mystery that demands an explanation that has yet to be forthcoming. Yet Democrats say the question is irrelevant since their ability to generate turnout is so expert and so superior to that of the Republicans they believe there is little doubt that once again the number of their voters will outnumber those of the GOP. To that end, journalists have been citing the fact that there are far more Obama campaign offices in states like Ohio than those working for Romney. But that is an argument that even some on the left understand is largely meaningless. Not only may the ground game advantage be a myth, the changes in partisan affiliation in the last four years render the optimistic poll numbers that are encouraging Democrats in the past week a self-deception that could lead to bitter disappointment on election day.