>> The lesser-evil argument seems to be of that class which one
>> either finds persuasive or one doesn't, for reasons not always clear
>> even to oneself.
> Except that in Weiner's district, the likelihood of a Republican winning is approximately 0.
The Republican who ran against Weiner last year got 40% of the vote. So a hypothetical strong third-party challenger from the left could definitely put a Republican in that seat.
SA