The national parties have collected more than ₹15,077.97 crore from unknown sources between 2004-05 and 2020-21, an analysis by the poll rights body — Association for Democratic Reforms, showed.
The total income of national and regional parties from unknown sources for 2020-21 stands at ₹690.67 crore.
ADR considered eight national parties and 27 regional parties for this analysis.