南达科他州参议员选战花费近千万美元 两人民调差距引关注

南达科他州联邦参议员选战在11月3日投票前持续升温：共和党现任参议员迈克·朗兹（Mike Rounds）迎战独立候选人布莱恩·本斯（Brian Bengs）。据无党派机构OpenSecrets汇编，两名候选人的竞选支出合计已达610万美元，联邦登记的政治行动委员会另投入超过300万美元影响选情，全场花费接近1,000万美元，且仍在增加。

本场选战没有民主党候选人，约四成支出用于支持本斯或反对朗兹。两份上周发布的民调差距不同：爱默生学院/KELO电视台民调显示本斯落后8个百分点、8%受访者未决定；梅森-迪克森/SD News Watch民调（样本500人，10月12日至14日调查，误差±4.5个百分点）则显示朗兹以56%对37%领先19个百分点。

双方捐款多数来自州外：支持本斯的"退休职业政客"与"摆脱政治"两个政治行动委员会合计投入170万美元助选或反朗兹；支持朗兹的南达科他保守派政治行动委员会已花费近100万美元，"捍卫美国就业"组织另投入约40万美元。南达科他州民主党登记选民人数不到共和党的一半，本斯是今年全美四名作为共和党现任参议员主要对手的独立参议员候选人之一。

Spending in South Dakota's U.S. Senate Race Nears $10 Million as Polls Show Different Margins Between Rounds and Bengs

Money is pouring into South Dakota's U.S. Senate race ahead of the November 3 election, as Republican Sen. Mike Rounds faces independent Brian Bengs. According to data compiled by the nonpartisan money-in-politics website OpenSecrets, the two campaigns have spent a combined $6.1 million, and additional spending by federally registered political action committees to influence the race has topped $3 million, pushing the total cost of the race near $10 million and counting.

In a race with no Democratic candidate, about 40 percent of the spending has supported Bengs or opposed Rounds, and both candidates have raised a majority of their contributions from outside the state. Two polls released last week showed different margins: an Emerson College/KELO-TV poll had Bengs trailing by 8 points with 8 percent undecided, while a Mason-Dixon/South Dakota News Watch poll (500 respondents, conducted October 12-14, margin of error ±4.5 points) showed Rounds leading 56 percent to 37 percent, a 19-point gap.

Much of the final-weeks advertising is funded by groups immune to state-level contribution limits: the PACs Retire Career Politicians and Freedom from Politics have spent $1.7 million to promote Bengs or oppose Rounds, while the South Dakota Conservative PAC has spent nearly $1 million and Defend American Jobs about $400,000 to support Rounds or oppose Bengs. Bengs is one of four independent U.S. Senate candidates nationally who are the main opponents of Republican senators this cycle.

来源：GSM·美国（原文链接）

图片来源：南达科他州拉什莫尔山国家纪念碑。图片：Dean Franklin，公共领域，取自维基共享资源。

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