Caucuses often help choose delegates for the national conventions that will happen for both Republican and Democratic parties next summer.

党团会议通常有助于为明年夏天的共和党和民主党全国代表大会选择代表。

The new U.S.-Japan Caucus has members from the both Democratic and Republican parties.

新的美日核心小组成员来自民主党和共和党。

A " third party" is any party besides the two main parties, besides the Democratic and Republican parties.

“第三党”是除民主党和共和党之外的两个主要政党之外的任何政党。

The Democratic and Republican parties are the largest and most competitive organizations in the American community.

民主党和共和党是美国社会最大、最具竞争力的组织。

Basically speaking, nowadays, no one now living in the United States can remember when the contest began between the Democratic and Republican parties.

基本上来说，现在生活在美国的人已经不记得民主党和共和党的较量是从什么时候开始的了。