ballot rigging
noun [ U ] uk/ˈbæl.ət ˌrɪɡ.ɪŋ/ us/ˈbæl.ət ˌrɪɡ.ɪŋ/
选举舞弊
the practice of using illegal methods to obtain a particular result in an election
Rumours of ballot rigging discouraged many from voting. 选票舞弊的传闻一传出，许多人便打消了去投票的念头。