While the Liberal and Labor parties each won a seat at the weekend’s Victorian byelections, delving deeper into the results shows the two-party system in crisis. Australia needs a strong two-party system to overcome the serious economic and security issues facing it. Minor parties and independents might wear bright colours and be great campaigners, but when it comes to the serious policy issues facing Australia, they lack the experience and ability to govern.

So why are the major parties wobbling in Victoria?