[dingaling]

> If you look at the age breakdown of the vote

That's not the breakdown of the vote but of exit polls and other opt-in polling such as YouGov surveys. Both of which are biased towards those (1) likely to contribute and (2) not concerned about sharing how they voted.

The actual demographic composition of the vote is unknown, it could be determined ( all UK ballot papers are linked to their voter ) but that would be unprecedented and probably bad for democracy.

[aninhumer]

>all UK ballot papers are linked to their voter

No they're not. The ballot papers themselves are indistinguishable, and they are rejected during counting if people include any identifying marks.

[majewsky]

> (2) not concerned about sharing how they voted

Are exit polls not anonymized in the UK? At the last federal election in Germany, I was asked to contribute in an exit poll, and they had their own voting booth and urn set up for that purpose next to the actual voting room.

The ballot was mostly identical, except for additional checkboxes for age group and gender, which they wanted to break down in their analyses. So still reasonably anonymized.

[dingaling]

The exit poll for the EU referendum at my local voting station was conducted by a man with a tablet computer! I didn't stop to investigate the process, unfortunately.

[CM30]

Haven't ever seen an exit poll round here. No one was trying to gage who voted for what near any of these polling stations.

Guess it's more common in some areas than others.