Local and international organizations, as well as various international missions who are interested to observe the elections, can apply for accreditation of observers. Their observers can observe the whole electoral process or just the election day, depending for which one they apply.
Individuals cannot observe elections. To observe the elections, you must join the teams of political party observers or NGOs. You can do this by contacting directly the political entity or NGO within the scope of which you will observe the election.