The domestic stakes of the UK referendum

A week ago, as the polls nudged Brexit slightly into an apparently decisive lead, the Leave campaign dared to imagine the victory line on 23 June.

The murder of Labour MP Jo Cox has cast a pall over the campaign. Campaigning was suspended for two days and, since hostilities resumed, the tone has been marginally less vicious.

In the meantime, the polling numbers have narrowed to a virtual dead heat. This campaign is simply too c...