[tolien]

Assuming the parties correctly report the spending, or anyone bothers to investigate. I think that is the weak point - if it wasn't for a fairly dogged campaign by Channel 4 the problem with the Tories overspending to promote particular candidates might never have come to light.

For the record, the magic number is £30k per seat contested on "campaign spending" (to promote the national party), and another about £10-16k of "candidate spending" (to promote a particular candidate) depending on the size of the constituency.

https://fullfact.org/law/election-spending-rules-conservativ...

[laythea]

Yep. It does make you wonder what else doesn't get out...