This is despite the fact that in a recent election survey all respondents said they are loyal to one of the two main parties. But a third of voters in each of the two main parties say they are so disenchanted with their platforms that they would join a third party if it were formed. Yet even if the poll reflects the views of the electorate as a whole, the new party has no chance of attracting a third of the vote.
the meaning of the passage?
Voters disenchanted with the two main parties are attracted to very different platforms