Vivek Dehejia, Resident Senior Fellow at IDFC Institute, in this Livemint article, writes about the lack of a proven relationship between economics and politics.  

"...as election outcomes are apparently random, elected politicians have no incentive to deliver good economic management (which hopefully translates into good economic performance) on their watch. For, if it is difficult to prove that good economics is good politics, it is equally difficult to prove that bad economics is good politics. In other words, once elected, a politician of conviction, freed from the notion that there is some strong provable relationship between what they do while in office and their re-election prospects, may be guided to do what they believe is right, simply because it is the right thing to do."

Read the full article here.