"Most Iranians express acceptance of the outcome of the Presidential election. Eighty-one percent say they consider Ahmadinejad to be Iran's legitimate president, and 62 percent say they have a lot of confidence in the declared election results, while 21 percent say they have some confidence. Just 13 percent say they do not have much confidence or no confidence in the results. In general, eight in 10 (81%) say they are satisfied with the process by which authorities are elected, but only half that number (40%) say they are very satisfied.
Among the 87 percent of respondents who say they voted in the June presidential election, 55 percent say they voted for Ahmadinejad. Only 14 percent say they voted for Mir Hossein Mousavi, the leading opposition candidate, and 26 percent refused to answer. Asked how they would vote if the election were held again, overall 49 percent say they would vote for Ahmadinejad, 8 percent for Mousavi, 13 percent say they would not vote, and 26 percent would not answer."
World Public Opinion, September 18, 2009
"This study was designed, managed, and analyzed by WorldPublicOpinion.org, a project managed by the Program on International Policy Attitudes (PIPA) at the University of Maryland."
"A total of 1,003 interviews were completed; the interview refusal rate was 52 percent."
"... the fact that one in four respondents refused to answer the question about who they voted for in the presidential election suggests that some people may have felt uncomfortable answering and thus the findings need to be viewed with caution and not as a clear indication of how people voted. Some questions for which we have trendline data also show a bit less readiness to take controversial positions in the current poll."