大象传媒

The failure of opinion pollsters to predict the outcome of May's general election may have been because Conservative voters are harder to track down, a report suggests.

Polling expert Professor John Curtice told the Daily Politics the polls "weren't simply interviewing enough Conservative voters - not that those voters were lying".

He recommended that, in future, there should be fewer, "more accurate" polls in the run up to elections, rather than daily offerings.