Argument: Open primaries diminish value of party influence over politicians
James Paterson. "Open Primaries threaten Liberal values." Menzies House. April 20th, 2010: "the major reason the Liberal Party Federally reversed its position on the Emissions Trading Scheme was that Liberal Party members bombarded their MPs about their strong views on the scheme. If those Party members did not have the threat of recrimination at a future preselection, they would lose all ability to influence their MPs."