Prevent false majority

From eg

Some ways to prevent false majority government, which is considered an intolerable outcome by many advocates of democracy:

• tactical votes (sometimes called strategic voting), the least desirable for reasons voteswap.ca explains.
• vote swaps, explained by voteswap.ca
• electoral reform towards more party-proportional voting systems, e.g. STV, MMP, BSTV+C+L, etc.