He won the nomination as Democratic candidate for the presidency.

他赢得了民主党总统候选人的提名。

《牛津词典》

She has conceded defeat in her bid for the Democratic Party's nomination for governor.

她已经承认自己在民主党州长提名竞选中失败。

《柯林斯英汉双解大词典》

A few days after McCarthy's success, Senator Robert Kennedy entered the race for the Democratic nomination for president.

VOA: special.2009.08.30

Pierce's other opponent for the Democratic nomination was James Buchanan of Pennsylvania.

VOA: special.2009.05.07

The nomination is expected to reach the full Senate for a vote before the Democratic-controlled Congress leaves for its August break.

VOA: special.2009.07.18

Richardson withdrew from the race for the Democratic nomination January 10 and later endorsed Obama.

CNN: Obama discusses top Cabinet post with Richardson, Clinton

So all of that should make Joe Biden a serious contender for the Democratic nomination.

NPR: Joe Biden, Big Guy from Little State

They want a battle royal for the Democratic nomination that goes on for several months.

CNN: All eyes on Iowa voters