Believe it or not, 5th May will be an important date for some of those people who cause us so much grief, the ones who don’t know where their polling station is and just do not care who’s in charge in Euclid Street. They will be heading for the Arts Centre and the Central Library for the events of Day 4 of the Swindon Festival of Literature, which as it happens include conversations with two star comedians, Isy Suttie and…