Ipsos MORI/Standard - CON 32, LAB 29, LD 9, UKIP 14, GRN 7

Ipsos MORI's monthly political monitor is out in today's Evening Standard with topline figures of CON 32%(+2), LAB 29%(-4), LDEM 9%(+1), UKIP 14%(-2), GRN 7%. The three point Conservative lead is the highest that MORI have shown since 2010 and the highest that any company has shown since January 2012. Full details are here.

As usual it's the unusual poll that gets the attention, when it should be the trend. The fieldwork for the poll was conducted between Saturday and Monday when the media was full of stories about Labour having a leadership crisis, so naturally enough people have concluded that Labour's leadership row has damaged them in the polls.

Except the MORI poll wasn't the only poll conducted at the weekend. ICM also had a poll in the field at the same time, which showed Labour one point ahead (though down three on the previous month). Lord Ashcroft also had a poll conducted at the weekend, which showed a one point Conservative lead, but no change from the previous week. Populus had a poll conducted over the weekend too - it showed Labour holding on to a two point lead. YouGov had a poll conducted Sunday to Monday and another one since then, both showed a one point Labour lead, unchanged from last week.

The fact that this is the largest Conservative lead and the lowest Labour score for years is meaningful in its own way. It's reflection of a general trend that has shown Labour drop from an average lead of around six points at the start of year, to an average lead of around about one point now. What the six polls we've had since the weekend don't agree on is that last weekend's row over Miliband's leadership had any huge impact on this pre-existing trend.