By Emily Dalgleish, Opinions Editor This past week, 17 million people watched Elizabeth Warren eviscerate Michael Bloomberg in the Nevada Democratic debate. Though Bloomberg’s debate performance was abysmal, the 17 million that saw him flounder on stage pale in comparison to the millions who are bombarded with his daily TV and online advertising. Google and Facebook have served over 2 billion Bloomberg ads so far this year, and his national polling has steadily climbed. We should not be surprised that a billionaire is trying to buy an election. We should be concerned that it is working.  While there...