Foyle is a key test in the 2022 election for all three parties that hold Assembly seats in the constituency.
Both Sinn Féin and the SDLP have two seats apiece, while the DUP has one. For Sinn Féin it will be a test of whether recent internal problems for the party locally have impacted its vote.
The party was riding high in the last Assembly election in 2017, with Elisha McCallion topping the poll and subsequently defeating the SDLP's Mark Durkan in a snap Westminster poll to become Foyle MP.
