You obviously took public school arithmetic - or public school logic. A McCain voter who stays home or votes third party or votes only the down ballot races is not the same thing mathematically as a McCain voter who switches and votes for Obama.
Not that hard, really. Zero sum, maybe, but there is a one vote swing and a two vote swing. A switch is a two vote swing. A stay at home is only one.
>>Not that hard, really. Zero sum, maybe, but there is a one vote swing and a two vote swing. A switch is a two vote swing. A stay at home is only one.<<
It is still a vote for him. The net effect of a complete swing is indeed 2 votes, but that doesn’t change the fact it is a vote for him. But that is a Schroedinger’s cat type analysis.