Winning the largest state left on the calendar — by a double digit margin — gave the Clinton campaign at least two more weeks' lease on life and legitimacy.But was it a double digit margin? In another story, NPR clarifies that Clinton's victory in PA was actually just 9.2%. Here are the total votes from the Pennsylvania Secretary of State (with 99.51% of districts reporting).
Sen Clinton 1,238,232 votes (54.57%)
Sen Obama 1,030,703 votes (45.43%)
So Hillary's actual winning margin of 207,529 votes was just 9.15%. The "double digit" margin is derived by rounding Clinton's percentage up to 55% and Obama's down to 45%.
As more decimal points get added to their percentages, her lead gets smaller and smaller, from 10% to 9.2% to 9.15% to 9.147%. That's just a non-decisive "single digit" margin of victory, unless you count the digits to the right of the decimal point.