Read back that list of coalition disagreements and it reminds you that they were issues on the margins of most voters' concerns whereas there is a surprising degree of cross party agreement on macro-economic policy, welfare cuts and schools reform let alone the proposals the two men will highlight today - be it childcare subsidies, pension reform or road tolls.

BBC: Coalition: Official - it's not a marriage

For if Romney is that adamantly opposed to Medicare cuts, without qualification, on what basis will he ever be able, let alone willing, to advocate Medicare reform of his own?

FORBES: Mitt Romney's Mixed, and Michele Bachmann's Terrible, Performances on Health Care at the CNN-Tea Party Debate