The 2021 elections will shed light on the future of the union, as Scotland and Wales prepare to elect new governments.

For Scotland, a good set of results for the SNP could signal the green light for Indyref2. In Wales, there is potential for Plaid Cymru to prop up Labour with a strong showing in the Senedd.

Politics.co.uk spoke to election expert Sir John Curtice about the state of the union, and who the winners and losers might be in the 2021 elections.