New ICM poll of marginals

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There is a new ICM poll of marginals in tomorrow's News of the World. The poll covered 96 Labour held seats where the Conservatives need a swing of between 4% and 10% to win (so like MORI's marginal polling, it straddles the 7% or so swing the Conservatives would need to win an overall majority - the Conservatives would need to take about half of these to win, if they won them all they would have a majority of about 100).

These are the same seats that ICM polled back in January (report here). The topline figures now, with changes since January, are CON 36%(-4), LAB 37%(nc), LDEM 19%(+5). This equates to a swing of 6.3%, so slightly less than the 6.9% the Conservatives require in marginal seats.

The most recent ICM poll showed a national swing of only 3.5%, so theoretically this poll shows the swing in the marginals is quite considerably more than nationwide - however, the previous ICM poll did seem rather out of place, showing only a 4 point lead in a poll conducted over the weekend. I suspect the national lead is actually greater than that, and therefore the Conservative outperformance in marginals seats is less than this poll would imply.

UPDATE: The next in tonight's cavaclade of polling should be ComRes in the Independent on Sunday, should be out quite soon.