Super Tuesday, which is March 5, and traditionally one of the most important dates on the US political calendar, is fast approaching. 

This primary season however, has been far from traditional and former US President Donald Trump is likely to be the Republican presidential nominee against incumbent Democratic President Joe Biden according to polling.

The only rival still in the race for the Republican nomination is former South Carolina Gov. Nikki Haley, who vows to continue to stay in the race.

How important is Super Tuesday and why is it a deal breaker for presidential candidate campaigns? 

Emeritus Professor Joseph Camil-leri, La Trobe University, Melbourne  and Fellow, The Academy of the Social Sciences in Australia weighs in.