Based upon the electoral results from the 17/4/1977 general election this study examines how the introduction of a system of single majoritarian representation (as in Great-Britain) might «reshuffle the cards» among the various political parties.Furthermore, one has examined which might be the consequences of the introduction of majoritarian representation for the over-all functioning of the Belgian political system. One bas also explored the possibilities to counterbalance the possible negative consequences of such a representation system.