Two by-elections which are a survey of 100,000 people showed Conservative support up a little since the GE, and yet one polling organisation ICM Guardian interviewing only 1000 people, and which drops Conservative support 10% in a week is given more prominence.
ICM have ‘others’ only on 10% up from 9% last week. Sedgefield had others on 20%. Other polls show consistently 15%. ICM lack credibility.