The Election Commission of India registers all political parties. It lays down criteria for recognition — a party getting at least 6% votes in State Assembly elections and 2 seats is recognised as a State party; a party getting 6% votes in Lok Sabha/Assembly elections in four states and 4 Lok Sabha seats is recognised as a national party. Recognised parties receive special facilities like a unique election symbol reserved only for their official candidates.
Source: Chapter 4, National parties / State parties section
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Examiners look for two things: (1) the Election Commission's power to register and recognise parties, and (2) the specific criteria (% votes + seats) for state vs national recognition. Mentioning the unique symbol privilege adds a concrete example of what recognition means. At 2 marks, one criterion + one privilege is sufficient, but quoting both thresholds shows you've read carefully.