Polling suggests that Tories have momentum for the first time since the first debate

I’ve been passed some rather interesting polling. It’s been done for Euro RSCG, the Tories’ lead advertising agency, and is based on a sample size of 2,000 and is, what they call in the trade, momentum polling. The idea is that you ask people which party they think is gaining ground and which is losing ground and that gives you an idea of which party is likely to put on support in the coming days.

This polling has been carried out before and after every debate. But I understand that the Tories have not seen it. Interestingly, it shows the Lib Dems doing well before the first debate—at that point they had a net momentum score of 23, eg the percentage of people thinking they were gaining ground minus those who thought they were losing ground was 23.