The accepted wisdom for many years is that Tories have sex scandals like Profumo and the Duke of Welllington and Labour has money scandals like the Bernie Ecclestone donation. The Lib Dems are a comparitively new party but seem to have contracted a bad case of sex scandal virus with Lord Rennard and Mike Hancock MP for Portsmouth. As both arose before the coalition they obviously could not have contracted it from their Tory bedfellows.
The old Liberal party has a rich history of scandals, in the 1890s there was the Liberator Building Socoiety scandal that forced one of their MPs. Jabez Balfour forced to flee the country to Argentina. Sometimes it was cross party as in the 1970s with corrupt architect John Poulson and links to Conservative Home Secretary Reginald Maudling, Labour council leader T. Dan Smith and others (1972-4): Maudling resigned, Smith sentenced to imprisonment.
In the 90s David Mellor resigned after press disclosure of his affair with Antonia de Sancha and gratis holiday from a daughter of a PLO official (1992). It did boost the sales of Chelsea strips however.
Then of course was the Daddy of them all Llyod George who managed to combine both sex and financial scandals together.
UKIP possibly helped by its geriatric age profile of its members is unlikely to figure high in the sex scandal league tables although as Farage brings in his YI youth this may change. Allegations of financial impropriety have been for over 10 years so UKIP may be more like the abour party.
UKIP have chosen one John Bickley, a local middle aged businessman as their parliamentary candidate for Wythenshawe and Sale. http://www.ukip.org/johnbickley
He seems to me to be prima facie a very good candidate similar to Diane James in Eastleigh. I hope he enjoys as god a result as Mrs James. He looks to me as a local party choice much better than Nuttall or his associates. If this continues and Nuttall stays out of it there is hope. It is to much to hope Farage will keep a low profile although in my opinion it would be better for Mr Bickley's electoral channces.