It seems almost inevitable that there will be an election in Northern Ireland, following deputy first minister Martin McGuinness’s resignation on Monday. This was after first minister Arlene Foster refused to step aside temporarily while an inquiry took place into the controversial ‘cash for ash’ renewable heat incentive scheme, which has turned out to be much more expensive than expected. Unless Sinn Féin nominates a replacement for McGuinness, which it has refused to do, an election has to be called. It is not certain if McGuinness will be a candidate in the expected elections: he has been diagnosed with a rare genetic disorder called hereditary ATTR amyloidosis, which affects the nervous system and the heart to varying degrees. Medical experts say the disease progresses slowly.