Washington: The upcoming Bihar Assembly election this month will be the biggest electoral test for Prime Minister Narendra Modi this far, scholars from a top American think-tank have said, noting that the ramifications of its results will be felt far away from the state's borders.

"No matter what the voters of Bihar decide, the ramifications will be felt far beyond the state's borders," scholars Milan Vaishnav and Saksham Khosla from the Carnegie Endowment for International Peace ¿ a top US think tank ¿ wrote in an op-ed yesterday.