Electoral system for the president

Slovakia
Answer
TRS
Source
Article 101 (2) The President of the Slovak Republic is elected by the citizens of the Slovak Republic in direct elections by secret ballot for a period of five years. All citizens with the right to vote in the National Council of the Slovak Republic have the right to vote the President.
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(4) The candidate who gets more than one-half of all valid votes of eligible voters is elected President. If no candidate gets necessary majority of votes by voters, a second ballot is held within 14 days. Those two candidates progress to the second ballot who got the highest number of the valid votes. In the second ballot, that candidate who got the highest number of all valid votes of the participating voters is elected President.
(5) If any of the two candidates who got most valid votes in the first ballot ceases to be eligible to by elected President prior to the second ballot, or waives the right to run for the office, the candidate who received in the first ballot the next highest number of votes proceeds to the second ballot. If there are not two candidates for the second ballot, the second ballot will not be held and the Speaker of the National Council of the Slovak Republic will call new elections within seven days so that they are held within 60 days thereof.
(6) If there is only one candidate running for the office of the President, the election will take place in a way that a vote will be taken on him; he is elected President if he receives more than one-half of the valid votes from participating voters. […]
Comment
The first direct Presidential elections took place in 1999.