I'd expect people who are affect to be more likely to vote "no", out of a desire to not use (or appear to use) the disaster to their advantage. They want a level playing field, and that means to them not getting special treatment because of outside circumstances.

I'd expect a lot of people not affected to vote "yes" out of a desire to not gain (or appear to gain) at the expense of other's suffering a disaster. They want a level playing field, and that means to them not having the competition disadvantaged because of outside circumstances.

It's the same reason Inigo Montoya let the Man in Black rest after the latter's climb up the Cliffs of Insanity, even though the Man in Black was willing to fight as soon as he got to the top.