While polls aren’t definitive, a series of them can reveal the trajectory of various political parties’ fortunes. DUP leader Gavin Robinson (Liam McBurney/PA)In fairness, they’ve been on a downward spiral for some time, and what’s saving them are recognisable elected representatives and demographics, something the TUV lacks. This is expected for most political parties in long-term governments within a normal democracy, but the Northern Ireland political arrangements are far from normal. Since its founding, the DUP set a high standard for morality and religiosity in public life and resembles a theocratic political party. UUP leader Jon Burrows (Niall Carson/PA)The latest LucidTalk polling suggests Alliance might be even more disappointed than the DUP.