Ooh er missus...

"Entryism? Ooh, the sauce!"

Absolutely all kudos goes to The Scotsperson hack reporting that Tommy Sheridan's press officer is defecting to the SNP. 
Specifically, the paragraph that reads : "Former Labour MEP Mr Kerr told The Scotsman he had held talks with Sheridan during a prison visit to his former boss, whom he insisted was “very sympathetic” to his decision to join the SNP.He also said that there “could well be” other members of Solidarity planning to defect to the SNP, a move which could see left wingers entering Mr Salmond’s party in a similar tactic used in the 1980s and 1990s to influence Labour by far left groups such as the Militant Tendency."


The temptation to note that Tommy is an acknowledged expert  on, and practitioner of, differing  (ahem) "variants" of  entryism must've been nearly overwhelming... 
Well done for exercising such restraint.