美国人将于11月3日前往投票站，决定唐纳德·特朗普总统任期余下时间的走向。
Americans head to the polls on 3 November to decide how the rest of Donald Trump's presidency will play out.
全美各地将举行数千场不同政府层级的选举。但对选民而言，主要事件是选举众议院和参议院的成员——这两个机构共同组成国会。
Thousands of races are taking place across the US, at different levels of government. But the main event for voters will be electing members of the House of Representatives and the Senate, the two chambers that make up Congress.
目前，这两个机构均由特朗普所属的共和党控制。特朗普在任最后两年的成败可能取决于选举结果。
Both of them are currently controlled by the Republicans, the president's party. The success or failure of Trump's final two years in office could rest on the outcome.
以下是我们的视觉指南，展示权力争夺战将在何处胜负分明——从批准率到关键选举和议题，以及巨额资金的支出。
Here's our visual guide to where the battle for power will be won and lost - from approval ratings, to key races and issues and the huge amount of money being spent.
反对党民主党有机会夺回国会控制权的原因之一，是总统的低批准率，这也是衡量其政党表现的良好指标。
One of the reasons the opposition Democrats have a chance to take back Congress is the president's low approval rating, which is a good indicator for how well his party could perform.
根据民调资讯网站Silver Bulletin的数据，特朗普在第二个总统任期初期的批准率略高于50%，但很快跌入40%。
He began his second term as president with an approval rating of just over 50%, according to polling resource website Silver Bulletin, but it quickly fell into the 40s.
今年2月底，特朗普决定与以色列对伊朗发动空袭时，其批准率徘徊在42%左右，随后不久跌破40%。目前其批准率约为37%。
It was hovering around 42% when Trump decided to launch air strikes with Israel against Iran at the end of February this year but it fell below 40% shortly afterwards. It is currently sitting at about 37%.
八年前，特朗普在第一个总统任期同期的批准率显著更高，达到43%。同期的乔·拜登批准率为40%。在这两种情况下，现任总统在中期选举中失去了众议院的控制权，但保住了参议院。
Eight years ago, Trump's approval rating was significantly higher at this point in his first term, at 43%. Joe Biden's at the same point in his term was at 40%. In both cases, the sitting president lost control of the House in the midterms but kept hold of the Senate.
但特朗普的低批准率有助于解释为何民主党人有望赢得国会两院，以及为何他们将目光投向近年来共和党一直稳赢的州。
But Trump's poor ratings help explain why Democrats are hopeful of winning both chambers of Congress and why they are setting their sights on states that Republicans have won consistently in recent years.
目前，众议院——即下院——的共和党多数优势极其微弱：他们拥有218名众议员，这正是掌控众议院所需的确切人数，再加上一名与他们投票一致的独立人士。众议院议员任期两年，所有435个席位将在十一月进行选举。
The current Republican majority in the House of Representatives, the lower chamber, is as thin as it gets - they have 218 representatives, which is the exact number needed to have control, plus one independent who votes with them. Members of the House serve a two-year term so all 435 seats are up for election in November.
但大多数选区并不被视为竞争激烈，因为执政党在这些地区拥有如此坚实的支持，只有一个可能的获胜者。
But most districts are not considered competitive because the party that holds them has such solid support that there is only one likely winner.
分析竞选和选举的《库克政治报告》指出，只有21个选区是“悬念选区”，两党都有可能获胜。
The Cook Political Report, which analyses campaigns and elections, suggests that just 21 districts are "toss-ups" that could be won by either party.
在这21个悬念选区中，现由共和党人占据的有15个，民主党人占据的有6个。如果民主党在此基础上再赢得其中的5个，加上另外28个被评为可能或倾向于民主党的选区，他们将赢得众议院多数。
Of those 21 toss-ups, 15 are currently held by Republicans and six by Democrats. If the Democrats win five of those on top of 28 districts classed as likely or leaning Democratic, they will win the House.
历史上，中期选举往往会有大量众议院席位易手，通常是对白宫的抗议。根据自1934年以来的数据，总统所属党派平均失去27个席位。在这23次选举中，总统所属党派仅在三次中实现了增席。
Historically, the midterms see a high number of seats changing hands in the House, usually in a protest against the White House. The average number lost by the president's party is 27, according to data going back to 1934. Of those 23 elections, the president's party has only made gains in three.
共和党在参议院的控制稍强一些。他们拥有100个席位中的53个，民主党拥有45个，还有两名独立议员也投票支持民主党。
The Republicans have a slightly stronger hold on the Senate. They hold 53 of the 100 seats while the Democrats have 45 and two independents who also vote with them.
参议院议员任期六年，因此大约每两年会有三分之一的席位进行选举。
Members of the Senate serve six-year terms so roughly a third are up for election every two years.
十一月将有35个席位进行竞争，但《库克政治报告》分析认为，只有7个是悬念选区，可能出现两党竞争的局面。
Thirty-five seats are up for grabs in November but analysis by the Cook Political Report suggests that only seven of them are toss-ups that could go either way.
在这些悬念选区中，现由共和党人占据的有6个，民主党人占据的有1个。民主党需要赢得其中的4个席位，再加上另外4个被评为可能或倾向于民主党的席位，才能达到51席并掌控参议院。但对民主党而言，赢得多数并非易事。
Of those toss-ups, six are currently held by Republicans and one by Democrats. The Democrats would need to win four of those seats, plus the four classed as likely or leaning Democratic, to hit 51 and take control of the Senate. But winning a majority is no easy task for the Democrats.
他们必须保住密歇根州的席位，民调显示该州的竞争比民主党希望的更为激烈，左翼政治局外人阿卜杜勒·埃尔-赛义德与其共和党对手、特朗普盟友、前联邦调查局特工迈克·罗杰斯之间的竞争尤为紧张。
They need to keep hold of their seat in Michigan, where polls suggest the race is tighter than Democrats would like between Abdul El-Sayed, a left-wing political outsider, and his Republican rival Mike Rogers, a Trump ally and former FBI agent.
此外，他们还需要在2024年特朗普以两位数优势获胜的州份夺取席位，包括阿拉斯加、爱荷华和俄亥俄。
And they would also need to pick up seats in states that Trump won by double-digits in 2024, including Alaska, Iowa and Ohio.
但民调显示他们有机会，即使是在得克萨斯州，前教师詹姆斯·塔拉里科如果击败现任州检察长、特朗普的亲密盟友肯·帕克斯顿，就有可能成为自1988年以来首位赢得该州参议院席位的民主党人。民主党控制国会对特朗普意味着什么？
But polls suggest they have a chance, even in Texas where former teacher James Talarico could become the first Democrat to win a Senate seat in the state since 1988 if he defeats Ken Paxton, the current state attorney general and close Trump ally. What would Democratic control of Congress mean for Trump?
安东尼·祖彻：共和党候选人在特朗普的钢丝绳上行走。特朗普在2024年大选竞选中承诺“结束通胀，让美国再次变得负担得起”，但生活成本危机正证明是选民的关键议题。
Anthony Zurcher: The Republican candidates walking a Trump tightrope Trump pledged to "end inflation and make America affordable again" in his 2024 election campaign but the cost of living crisis is proving to be the key issue for voters.
总统自豪地宣布，在2月24日的国情咨文中，美国大多数州的汽油价格“目前已降至每加仑低于2.30美元（1.74英镑）”。但伊朗战争在四天后爆发，扰乱了中东能源供应，导致美国汽油价格飙升至每加仑4美元（3.03英镑）。
The president proudly declared that gas was "now below $2.30 [£1.74] a gallon in most states" in his State of the Union address on 24 February. But the war with Iran began four days later, disrupting Middle Eastern energy supplies and causing gas to hit $4 (£3.03) in the US.
随着战争的后果在全球范围内蔓延，最终波及美国消费者的钱包，战争日益不受欢迎。一项在8月进行的民调显示，63%的受访者对特朗普处理该情况的方式表示不赞同。选民表示对他们重要的其他议题包括医疗和移民。
The war became increasingly unpopular as its consequences reverberated around the world and ultimately hit American consumers in the pocket. One poll carried out in August found 63% of respondents disapproved of Trump's handling of the situation. Other issues that voters say are important to them include healthcare and immigration.
特朗普最近一直在宣传他的移民政策是一项重大成功，引用近年来边境越境人数显著下降的数据。
Trump has recently touted his policies around immigration as a big success, citing significantly lower border-crossing figures than in recent years.
许多民主党候选人正在关注美国健康保险的高昂成本以及特朗普立法对医疗体系准入的影响。特朗普希望在中期选举临近之际降低燃油成本——这会奏效吗？
Many Democratic candidates are focusing on the high costs of US health insurance and the impact of Trump's legislation on access to the healthcare system. Trump wants to reduce the cost of fuel as the midterms loom - will it work?
大多数迹象表明，民主党在中期选举中将取得成功，但如果他们赢得的席位超过预期，这也不会是特朗普及其政党首次超越民调预期的情况。他们有利的少数因素之一是巨大的财政优势。
Most signs point towards a successful midterms for the Democrats, but it wouldn't be the first time that Trump and his party have outperformed polls if they do win more seats than expected. One of the few things in their favour is their huge financial advantage.
截至8月底，共和党全国委员会及其盟友手头拥有超过6亿美元（4.55亿英镑）现金，而民主党则略低于4亿美元（3.03亿英镑）。
At the end of August, the Republican National Committee and its allied groups had more than $600m (£455m) cash on hand, while the Democrats had just under $400m (£303m).
除此之外，共和党还通过特朗普的MAGA Inc集团持有超过4亿美元，该集团是“让美国再次伟大”政治运动的主要筹款和支出机构。共和党正利用这一财务优势购买广告。
On top of that, the Republicans also had more than $400m held by Trump's MAGA Inc group, the main fundraising and spending arm of the "Make America Great Again" political movement. The Republicans are using that financial advantage to buy advertising.
根据研究公司AdImpact的数据，9月份向美国选民播放的政治广告价值超过10亿美元。共和党的支出比民主党多2亿美元，并在几乎所有被列为摇摆州的参议院竞选中超过了民主党的支出。
More than $1bn worth of political ads were broadcast to US voters in September, according to research firm AdImpact. Republicans spent $200m more than the Democrats and outspent them in nearly all of the Senate races classed as toss-ups.
特朗普希望这一轮晚期信息轰炸能够帮助说服共和党人在11月出门投票，提高投票率，并减少对他及其政党造成的损害。
Trump will be hoping this late messaging blitz can help convince Republicans to get out and vote in November, boosting turnout and limiting the damage done to him and his party.
无论结果如何，注意力将很快转向2028年的下一届总统大选。特朗普的不受欢迎程度一直主导着中期选举，但由于他宪法上无法参加第三届连任，焦点将转向民主党所主张的内容，而不仅仅是他们反对的内容。
Whatever the result, attention will quickly turn to the next presidential election in 2028. Trump's unpopularity has dominated the midterms, but with him constitutionally unable to run for a third term the focus will shift to what the Democrats stand for, not just what they stand against.