“政治权力”常见的英文表达是 political power。
例句：
Political power is often concentrated in the hands of a few elite groups.（政治权力常常集中在少数精英集团手中。）
The struggle for political power has been a recurring theme in this country's history.（对这个国家历史而言，政治权力的争夺一直是一个反复出现的主题。）