Coal was produced mostly in six states: Pennsylvania, Ohio, Indiana, Illinois, West Virginia and Colorado. In eighteen forty, the United States had seven thousand coal miners.

美国煤矿主要在六个州：宾夕法尼亚州、俄亥俄州、印第安那州、西维吉尼亚州和科罗拉多州。

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But new polls give Obama a significant lead in key states like Pennsylvania, Ohio and Colorado.

但是新的民调显示，奥巴马在重要的州，比如宾夕法尼亚州、俄亥俄州和科罗拉多州，明显领先。

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The welfare caseload rose by more than 20% in Oregon and South Carolina, and by more than 10% in California, Colorado, Florida, Maryland, Ohio and Washington state.

其中，俄勒冈州和南卡罗来纳州的增幅超过20%，加利福尼亚州、科罗拉多州、佛罗里达洲、马里兰州、俄亥俄州和华盛顿洲的增幅都超过10%。

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Coal was produced mostly in six states: Pennsylvania,Ohio,Indiana,Illinois, West Virginia and Colorado.

VOA: special.2009.03.16

In addition, California, Arizona, Georgia, Maryland, New Jersey, Illinois, Pennsylvania (Tobacco Settlement Fund), Colorado and Ohio have also adopted limited Iran-free investment policies in recent years.

CENTERFORSECURITYPOLICY: Center For Security Policy

If, for argument's sake only, you give Nevada, Michigan, Pennsylvania and New Hampshire to Obama, and you award Colorado, Ohio and Virginia to McCain, you wind up with ... 269 electoral votes for each candidate.

NPR: Palin Moved The Electoral Map, But For How Long?

Mr Romney was scheduled to spend the day in the state of Virginia and Mr Obama in Iowa, while their running mates - Congressman Paul Ryan and Vice-President Joe Biden - were bound for Ohio and Colorado respectively.

BBC: Obama hits back in fiery second debate with Romney