In the 1961 federal election six per cent of West German voters failed to cast two valid votes under the single-ballot, two-vote German electoral system: 1.3 million voters cast their party list vote invalidly, while almost one million failed to vote validly for a district candidate. Since 1949—and 1953, when the present single-ballot, two-vote system was introduced —the development of the invalid vote has been as shown in Table I.
Not only has the total invalid vote increased steadily, despite the counter-movement of first and second vote trends; it has also been exceptionally high in comparison to the Weimar Republic, Imperial Germany and other Western European countries. Thus in pre-Hitler Germany the invalid vote seldom exceeded 1 per cent of the poll. In postwar parliamentary elections in Scandinavia it has not yet exceeded 1 per cent while in Britain, Switzerland and Austria it has approached 2 per cent only in rare instances. In Fourth and Fifth Republic France spoiled and blank ballots have been constant at about 3 per cent of the poll. Only in isolated cases—for example, where compulsory voting is combined with a deep-seated social and political malaise, as in Belgium—has the invalid vote been comparable in proportion to that of Western Germany.