Finland - 1999 Constitution

Title Article 54
Chapter 5 - The President of the Republic and the Government
Article

54

(3) The right to nominate a candidate in the election for President is held by any registered political party from whose candidate list at least one Representative was elected to the Parliament in the most recent parliamentary elections, as well as by any group of twenty thousand persons who have the right to vote.

Amendment Constitution: Article 23.a (1991)
Categories - Electoral party (Fielding candidates)
Source The International Constitutional Law Project (http://www.servat.unibe.ch/law/icl/info.html)