As the May elections creep closer, the leadership speculation at Westminster grows more intense. Is Keir Starmer safe and, if so, for how long? When will Angela Rayner’s tax affairs be resolved, and will she return to the cabinet? Who has Andy Burnham done a deal with to get back to Westminster, and would MPs support him if he did? Why has Wes Streeting gone so quiet? To the frustration of many – not least the prime minister himself – discussions about who is up and who is down have long been a staple of Westminster life. But as the security of the prime minister’s position has ebbed and flowed in recent months, it has intensified. So where do Starmer – and his putative rivals for No 10 – stand? Keir Starmer. Backbenchers are worried there is no clear replacement for the prime minister. Photograph: Jack Taylor/PA Keir S tarmer Despite feverish leadership speculation, and Starmer’s rock-bottom public approval ratings, the most likely scenario remains that he stumbles on.…