N-COUNT （尤指政治方面能利用其影响帮他人获得权力的）权力经纪人 A power broker is someone who has a lot of influence, especially in politics, and uses it to help other people gain power. （尤指政治方面能利用其影响帮他人获得权力的）权力经纪人
Jackson had been a major power-broker in the 1988 Presidential elections.