They hope to make big 'gains' in Congress in the coming election. [=they hope that many more members of their party will be elected to Congress]
Her hard work 'gained' her their respect. [=she has gained their respect through hard work; they respect her now because of her hard work]
a stock that was one of the year's biggest 'gainers' [=one of the stocks that increased the most in value]
(..) I've admitted it. All that proves is that I'm honest, unlike a president who would use the Department of Justice to target his political opponent for his own personal gain. Let me remind you, ma'am, the president was unconscious when this investigation began... It doesn't matter whether (..)2016 TvShow: House of Cards Title: Chapter 45 Season: 4 Episode 6