Confusion over the meaning of "double digits"

I seem to be hearing this afternoon a lot of buzz about Clinton beating Obama by a "double digit" margin. This seems strange: as far as my arithmetic tells me, her margin was 215166 votes out of 2304518 votes cast (so far, that is: there are still a handful of precincts yet to be counted in Obama's territory, the city of Philadelphia).
Thus the current margin of victory is closer to 9.34% which is substantially less than 9.5% (which I could see being rounded up to make 10%).

Of course, the truth is that the media is unable to deal with decimals, and hence is reporting that Clinton got 50+(9.34)/2=54.67%, which they round up to 55%, and Obama's 45.33% gets rounded down to 45%. And of course, the difference between them is "10%", and so the media is spins that she beat him by double digits.

This only matters psychologically, of course. Just like waterboarding.

Unless of course some media head wants to explain that it is double digits; the two digits are 9 and 3, as in 9.3%.
Yours, counting on mistakes,
N.