At the general elections, the Belgian voter has the possibility to bring out either a vote for a party (a liste-vote) or a vote for a candidate of the party (a preferential vote). At the general elections of April 17, 1977 for the House of Representatives the voters have voted for 50,26 % by preference, whereas for the Senate 40,65 % of them have done so. The use of preferential votes is varying from one electoral district to another: from 69,96 % in the district of Oudenaarde to 32,85 % in Bergen. There is also a difference from one political party to another. The highest percentage is obtained by the PW-PLP (liberal party): 59,51 %; the lowest by the KPB-PCB (communist party): 30,14 %. The preferential votes individual candidates obtain differ widely, pointing out not only their popularity but also to a certain extend their political power.