<p>The bypoll in Channapatna is being contested by C P Yogeshwar of the Congress, and Nikhil Kumaraswamy of the JD-S BJP alliance.</p><p>Tied to the outcome are the fates of several heavyweights in Karnataka.</p><p>Can this bypoll determine the future of politics in the state?</p><p>Sujay BM reports from Channapatna.</p>