Trade union money is the cleanest cash in politics – Telegraph Blogs‏

"A lot cleaner than the foreign donations from dodgy Serbian arms dealers and other figures that helped bankroll the Tory Party prior to Labour’s law change in 2000. And a lot clearer than Lord Ashcroft’s relationship with the Inland Revenue." http://blogs.telegraph.co.uk/news/msalter/100030427/trade-union-money-is-the-cleanest-cash-in-politics/