This happens in theory but in practise does not work this way. Precedent in the United States has shown that political discourse is still fractious despite the presence of Open Primaries as it is still the ideologically focussed base that that vote and decide such elections on a low turnout.  Even if Propositions contentions were true, it can be argued that it is the lack of clear dividing lines between parties that can cause major disillusionment in politics, with many parties now subscribing to a broadly neoliberal world view as has happened in the UK where parties regularly cross-dress, appeal to the same groups and steal each other’s policies. [1] The lack of clear ideology engendered by Open Primaries would make such disillusionment worse. Two parties that agree on everything would seriously damage turnout as no clear choice is presented to the electorate.  [1] Ash, Timothy Garton, ‘If our political parties did not exist would we ever need to invent them?’, The Guardian, 25 October 2007,