I think that having damagingly uninformed opinions about the values of your actions (e.g. "I'll lose the election and the other guy is evil") counts as either corrupt (in terms of not monitoring information diet to take care not to betray people) or stupid (in terms of being unable to do so.)

If someone were to accept significant bribes, and then, say, donate all of the money to a highly efficient charity such as SIAI, NFP, or VillageReach, after doing a half-hour or longer calculation involving spreadsheets, then I might not count them as corrupt. However I think the odds that this has actually EVER occurred are practically insignificant.