She is one of the few Cabinet members who does not give the impression of having had her personality flattened by the sacrifices demanded by a ministerial career.
Drawing on decades of experience and friendships from all parties, Sir David – inventor of the swingometer – founded the UK’s psephological profession.
A further graft from the remnants of Labour and the LibDems might be the best way of preserving the Union and providing an alternative government to the SNP.