The popularity of Howard has been at an all-time low since the ascension of [[Kevin Rudd]] to the leadership of the Opposition. Throughout 2007, there has been a slight decrease in the margin of popularity between the two leaders, but commentators have suggested that this has been negligible. A legislative election must be called before the end of 2007. | The popularity of Howard has been at an all-time low since the ascension of [[Kevin Rudd]] to the leadership of the Opposition. Throughout 2007, there has been a slight decrease in the margin of popularity between the two leaders, but commentators have suggested that this has been negligible. A legislative election must be called before the end of 2007. |