Are election debates about winning or simply not losing, and do they influence votes? The team analyse the first Scottish leaders debate, and look into some of the political frontlines the parties are fighting on, from oil & gas, to the NHS, and devolution. With multiple further debates to follow during the general election campaign, what will politicians be hoping to get out of the debates, how might it influence people's voting intentions, and why does it feel like there are several different election campaigns going on all at once?