First past the post favours loyalty to the state

It is natural to treat voters as anarchists since not everyone identifies with the state. We can assume the voters are a problem for the state otherwise they would merely vote for the state to constantly grow bigger.

If the people are given only a first-past-the-post system then only the largest party will gain representation meaning that many smaller parties will be ignored. The ignored parties will tend to be more liberal since they have not shown the loyalty required to vote for one of the larger parties. People who are comfortable identifying with the state will find it less offensive to vote 'tactically' for one of the larger parties of the establishment. So then we can say that fptp favours statists and the left.

Liberals are more disloyal to the state which is why first-past-the-post favours the left.