There's a serious omission in that op-ed that misrepresents that 2:1 ratio.
Namely, that Ahmadinejad only had the vote of 34% of the those polled while Mousavi had 14%. So yes, technically that's 2:1 where the the sum total of both figures is less than 50%. Read the actual report
linked to in the article, they highlight this rather important qualifying information by the big red text on page 3.
And if you look at the actual tallies for that question on page 52, question 27, you will see it's 34% for Ahmadinejad, 14% for Mousavi, 27% (!) don't know and 15% (!!) who refused to answer. Both of those are non-trivial percentages that can swing either candidate for a landslide win. This undermines the implication that there is strong support for Ahmadinejad, by a ratio of 2:1 to his closest rival. Seriously, that's an incredulous omission to make, nevermind the fact that the poll itself was conducted a month ago. It is in these past two weeks that voter's opinion would better reflect their voting preferences, you know, after the actual presidential debates.
Fivethirtyeight.com has a good write up
of these points, explaining why the opinion expressed in the editorial is not supported by the report it cites. Juan Cole
has another good explanation as well.
(The most interesting question on the survey for me BTW, was the question that asked about developing nuclear energy. A full 83% responded with 'strongly favour' while 11% said 'somewhat favour'. That's 94% combined.)