Answer: The United States
Explanation: This is because of the way that the political system is based in the United States where local support is very important due to the electoral system and the high number of districts. Volunteering to help a candidate can be really helpful in the United States, especially in swing states where you might get many voters to support a side.
Citizens of the United States have been found to participate more as campaign volunteers during an election, than citizens of other countries such as; Germany, France, Great Britain and the Netherlands.
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