The Makerfield by-election has got people around the country talking about Andy Burnham again. And a new poll has shown that, with increasing scrutiny, he’s become a lot less popular. We reckon that’s because he represents the same kind of fence-sitting, corporate politics that gave the UK Keir Starmer. Unsurprising popularity dive Voters tend to view most politicians unfavourably, overall. But Andy Burnham was a rare case before the by-election campaign. Because there were actually more people who viewed him favourably. That has quickly changed in recent weeks, though, with YouGov reporting that his: favourability has declined markedly over the past…