In Canada, the party which wins the most seats in a general election forms the government. If the party wins just half or fewer than half of the seats in the House of Commons or legislative assembly, then the party forms a minority government. A minority government has to negotiate with other parties and adjust policies to get enough votes from other parties to pass legislation. A minority government must constantly work to maintain the confidence of the House of Commons or legislative assembly to stay in power.
Compare with majority government.