Before the election the parties needed to be registered by the National Electoral Office. After registration the parties had the right to collect references. Each candidate had to collect 750 references in their district. If one party collected the required number in two districts (in Budapest 8, Pest 5 and Borsod-Abaúj-Zemplén 3) in a county, then it could present a list in regional constituencies. If a party had at least seven regional lists, it could present a national compensation list. 17 March was the last day when a party could be registered and a list or a candidate could be registered. By 28 February, 49 parties had sought registration, and 45 were registered by the National Electoral Office.