Of these, the first story is potentially the biggest scandal. But it's the latter two which more immediately threaten to alter the political mood music. Whether right or no', The Haiti story could undermine Labour's claims to be the Party Who Care. And the row between Labour and business could do likewise for the government's boasts about leading us into recovery. Either way, I doubt Brown would have chosen such a sickly backdrop to his election announcement next week.
It's striking how the upturn in Tory fortunes (see YouGov in the Sun) has come in a week when Cameron & Co. have offered a positive prospectus for change: the national insurance policy, the Big Society, that kind of thing. Of course, elections require a dose of negativity as well – especially against a government which has led the country into £1 trillion (and rising) of debt. And, of course, things could change in the next few weeks. But I, for one, don't think this week's correlations are a coincidence.