Pick of the week: SNP, psychoactive substances, and Sadiq Khan

A chance for you to catch up on our most-read stories of the week.

Five: The real reason the pollsters got the general election so wrong

Few predicted the correct outcome of the 2015 general election but why did the pollsters get it quite so wrong? This piece, written by the man who led the independent inquiry into last year's polling debacle which was released this week, suggested it was more about unrepresentative samples than it was to do with 'shy Tories'.

Four: The SNP's income tax policy puts them firmly on the centre-right

Our next piece took a look at this week's Hollyrood election debate and and suggested that the SNP's income tax policies show that the New Labour project lives on in Scotland.

Three:  Disaster for Theresa May as legal ruling brings student deportations to a halt

In third place is our report from last week on the damning legal ruling on Theresa May's student deportation programme. A tribunal found that the Home Office has deported thousands of students from Britain based on extremely flimsy evidence.

Two: Psychoactive Substances Act delayed while the Home Office works out what it has banned

Our next item will come as no surprise to anyone who has been following the progress of the Psychoactive Substances Bill. It reported that confusion continues around what is actually being banned and how the law will be enforced. The Act has now been delayed while the police and the Home Office try to figure out what to do with it.

One: Sadiq Khan: There are too many white men on Transport for London

And in the top spot this week we have a report on comments made by Sadiq Khan about the need for greater diversity on Transport for London. Speaking at an event on Wednesday the Labour candidate for mayor said the city's transport authority was dominated by white men.