Grading Deval Patrick

I think the Phoenix is being a little too generous.

If the Phoenix were grading the recent performance of Governor Deval Patrick, we'd give him somewhere between a B and a B- for pure policy, but between a C- and D+ for political skill.

This discrepancy seems to stem from Patrick's personality as much as anything. He masters those political skills he cares about: insurgent party organizing, for example, or propelling major policy initiatives onto the public agenda. But he remains an amateur at other aspects of the political game — the ones he finds dull or unnecessary.

Is there a grade below an F?