Here's an excellent example of disproportionality from Wikipedia: the Canadian federal election of 1926 for the province of Manitoba. The province was entitled to 17 seats in that election. The result was very different from how people voted:
| Political party | % votes | Number of seats |
% seats |
|---|---|---|---|
| Conservative | 42.2% | 0 | 0% |
| Liberal-Progressive | 19.5% | 7 | 41% |
| Liberal Party | 18.4% | 4 | 24% |
| Progressive | 11.2% | 4 | 24% |
| Labour | 8.7% | 2 | 12% |
The Conservatives clearly had the largest number of votes across the province, but received no seats at all – thanks to the use of plurality voting in districts in which the conservatives never were concentrated enough in any particular district.