Change Election Law to Require Full Disclosure of Funding

The OECD, the LSE, and a number of unions have declared their support for remaining in the EU, but the public may not be aware that these organisations receive funding from the EU, potentially creating a conflict of interest.
To avoid this in future, the government should change the law on elections. Organisations endorsing an institution in a public vote should be required to disclose whether they've received funding from that institution and how much they've had in the preceding 3 years.