The money quote from this EKOS survey:
Ekos found that 1.5 per cent of voters surveyed in the seven ridings stayed home because of calls concerning polling station location changes - and 0.1 per cent, or 1/20th of the total, identified themselves as Conservative supporters. [Ekos president Frank] Graves said the margin of error in this finding is 0.4 per cent.
He said a vote shift of less than 1.3 per cent in six of the seven ridings was all that was needed to shift the outcome.
The Council of Canadians has launched a court challenge of the voting results in the seven ridings concerned. We watch, we wait.