4. Which two countries use both the first-past-the-post and proportional representation Systems in elections to the lower house of the legislature.
(A) Mexico and Nigeria
(B) Mexico and Russia
(C) Nigeria and Russia
(D) Nigeria and the United Kingdom

(B) Mexico and Russia

Explanation:

In the First-past-the-post system, the person who received the most votes for a position, wins the position, regardless of if they have a majority or not. With Proportional representation, the different factions in the electorate will get to be represented based on proportion.

Mexico and Russia both use the first-past-the-post and proportional representation  systems in electing their lower house to ensure that their citizens get as much representation as possible.

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