and the Senate of 136 Senators. This differentiation is possible owing to the legal provision of a representation norm differing from one Chamber to the other and due to the seats allotted to the national minorities (a seat in the Chamber of Deputies for each minority) and to the Romanians living abroad (4 seats in the Chamber and 2 in the Senate). Thus, for the election of the Chamber of Deputies the representation norm is of one Deputy to 73,000 inhabitants, and for the election of the Senate, of one Senator to 168,000 inhabitants. The number of Deputies and Senators to be elected in each constituency is determined on the basis of the representation norm, by relating the number of inhabitants in each constituency to the representation norm. There are 43 constituencies: 1 for each county and the Municipality of Bucharest, and 1 for the Romanians living abroad. In a constituency, the number of Deputies cannot be less than four, and that of Senators, less than two. The number of inhabitants taken into account is that existing on 1 January of the previous year, published in the Statistical Yearbook of Romania. If, at least five months before the election date, a general census has taken place, the number of inhabitants taken into account is that resulting from the census. The electoral threshold is for parties or candidates running individually 5% on national level or 20% in at least 4 constituencies, and 8-10% for coalitions or electoral alliances. The Constitution of Romania and the Election Law grant to legally constituted organizations of citizens belonging to national minorities, in case these could not obtain at the election at least one Deputy or Senator mandate, the right to a Deputy mandate, if they have obtained throughout the country a number of votes equal to at least 5% out of the average number of votes validly expressed throughout the country for the election of one Deputy. The mandates assigned, under the conditions of the Election Law, to organizations of citizens belonging to national minorities are added to the Deputy mandates resulted from the representation norm. European Parliament To elect the 33 MEPs (35 MEPs between 2007 and 2009, 32 between 2014 and 2019), Romania is considered a single constituency. The system used is closed party list proportional representation, with a 5% threshold of the votes. Local elections To elect the mayors the first past