What’s she plotting? (Photo by Ryan Jenkinson/Getty Images) Angela Rayner is thoroughly sick of being underestimated. In recent months, waiting out her time on the subs bench after resigning over her still-unresolved tax affairs, she has been on doorsteps with colleagues and confronting, time and again, the unpopularity of Keir Starmer, which she has told those close to her is irreversible, unrecoverable, the kind of unpopularity that a U-turn or a fresh policy direction can’t fix. He is seen as disingenuous, weak, always changing his mind by Reform-leaning voters; he is disappointing, inauthentic, insufficiently progressive to Green-leaning voters. The need to change leader is urgent, she has told friends. If the party waits too long, it will be too late. Rayner is tired, too, of Labour’s “displacement activity” – the various coping mechanisms her party has adopted to avoid confronting the reality of how badly it is doing in office.…