He conducted a negative campaign against his opponent.

他对他的对手进行了负面打击。

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Howard Wolfson, Hillary Clinton's former communications manager, wrote in a blog for New Republic that McCain's negative campaign would not save the Republican candidate.

曾担任希拉里·克林顿的发言人的霍华德·沃尔弗森在《新共和国周刊》的博客上称，麦凯恩的负面竞选策略无法拯救自己。

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All of these voters say they are glad that the barrage of mainly negative campaign ads will finally come to an end today. Craig Windham, NPR News, Arlington, Virginia.

这些选民说，他们很高兴狂轰乱炸式的选举抹黑广告今天就要停播了。N PR新闻，克雷格·温德姆弗吉尼亚州阿灵顿市报道。

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But when Doug Forrester put her comments in a television ad, that seemed to push the negative campaign too far.

NPR: Democrat Corzine Manages Jump from Senator to Governor

Representative CONRAD BURNS (Republican, Montana): Baseless allegations drummed up in a negative campaign that started almost a year and a half ago.

NPR: A Year of Ethics Lapses in Congress

Mr. Romney's largely negative campaign was able to demolish Mr. Gingrich, but it is also hurting his own favorability, especially among independents.

WSJ: Review & Outlook: Romney Strikes Back