I’ve updated my “Poll of Polls” to include 26 more polls that were carried out since I did my last graph (which due to other demands was a few weeks ago). This only has polls up to 26 March so will not show any impact from the Leaders’ Debate last week.
Overall this Poll of Polls shows a marginal rise in Labour lead since the last Poll of Polls.
If you want to download the spreadsheet that did this analysis go here. If you want to understand the methodology behind the “Poll of Polls” click here and scroll down to the bit that gives the description.