While an interesting problem to try and solve (in theory, not in practice!), one has to be very much aware of where those 11 votes had to be injected for the “h

While an interesting problem to try and solve (in theory, not in practice!), one has to be very much aware of where those 11 votes had to be injected for the “hack” to work. You basically need to have a somewhat precise picture of the proportionality before you could do it I a non-obvious way (= small margin victory). While polling gives you something close to that, I don’t believe that it’s precise enough.