The former chief executive of the Liberal Democrats thinks that a failure to deliver Lords reform will not threaten the coalition.
Failure to deliver on the most important aspects of constitutional reform would, of course, be a bitter blow to Liberal Democrats.
But the party will also recognise that the constitutional package within the coalition agreement was not the most important aspect of it to the voters, nor was it nearly as important as the state of the economy as a reason for the decision to provide the country with a stable government.
Nick Clegg says plans to reform the House of Lords will be abandoned after the coalition contract was "broken" by the Conservatives.
David Cameron may be set to abandon proposed reform to the House of Lords. The Liberal Democrats will be bitterly disappointed.