what are the argument for and against politics being a science
science should be based on repeatable, observable results.
Does politics fit that category?
Some say politics has predicability...and PT Barnum said that about sucker coming to his circus. http://www.goodreads.com/author/quotes/201036.P_T_Barnum
Rupert Murdoch has bet a fortune that politics is in the category of what Barnum described.
You decide if it is a science or not.