As Douglas W. Rae points out in the standard reference
work The Political Consequences of Electoral Laws,
majoritarian electoral systems are extremely rare for multi-seat legislatures, only being well established in Australia, and for second round voting in some French elections.
By contrast, especially in recent years, the tendency in
majoritarian countries has been for governments to prefer to
work with their own politically appointed advisers and to ignore the unpalatable advice of technically neutral civil servants where this is judged to interfere with the chances of electoral success or political expediency.