US midterms: what happened while Asia slept, and when to expect results

US midterm elections are elections held halfway through a president’s term. Voters choose members of Congress rather than a president. The two parts of Congress are the House of Representatives and the Senate. Midterms matter because they can change which party controls the lawmaking process during the president’s remaining years in office.

The 2018 election described here focused on whether Donald Trump’s Republicans would keep Congress. Democrats needed a net gain of three House seats or four Senate seats to take control. The House and Senate also have different election patterns, so not every Senate seat is contested in every midterm.

Control of either chamber can affect the president’s agenda. A party’s congressional majority can shape which bills receive attention, influence investigations, and control important votes. The article’s prediction markets gave Democrats a 94 per cent chance of taking the House and a 74 per cent chance of winning the Senate.

Democrats needed a net gain of three seats to control the House of Representatives. They needed a net gain of four seats to control the Senate. “Net gain” means Democratic victories had to outweigh any seats the party lost elsewhere. The target was therefore not simply the number of races Democrats hoped to win.

The article identifies several Senate races to watch, including Maine, Texas, Georgia, Michigan, North Carolina and Iowa. It also reports that Democrats held a nine-point lead in the generic congressional ballot. Prediction markets placed their chances of taking the House at 94 per cent and the Senate at 74 per cent on election day.

These figures describe expectations, not final results. Some races could be called within hours, while others might take days. The balance could remain uncertain until enough votes were counted and close contests were resolved. A few seats could therefore decide which party controls each chamber.

A congressional majority gives a party greater control over the legislative agenda. It can decide which bills receive hearings and votes, shape legislation, and use committees to examine the administration. A president may still propose policies, but Congress can make passing them easier or harder. This is why control of the House or Senate matters beyond election night.

For example, if Democrats captured the House, they could control House committees and decide which measures advance there. If they also captured the Senate, they would control both chambers. The Senate has a separate role in voting on many presidential appointments, while both chambers participate in passing federal legislation.

The article frames the election as a decision over whether Trump’s Republicans would keep Congress. Democrats needed three House seats or four Senate seats for control. A change in either chamber could therefore alter Trump’s ability to turn proposals into law and could increase congressional scrutiny of his administration.

Counting speeds differ because the US states set many election rules. The Constitution gives states primary authority over the times, places and manner of elections. Identification requirements, postal-voting procedures, and ballot-arrival deadlines therefore vary. States also use different counting systems and may face different numbers of close or disputed races.

Postal ballots are a major reason for delays. Officials must check each voter’s signature against the signature on file, and some states wait up to seven days for mail ballots to arrive. The article contrasts Florida, which usually counts within hours, with California and Alaska, where counting can take days or longer. Ballot scanners can add another delay: New York’s Westchester County had scanner failures after a software update.

A strong showing by either party could make control of Congress clear within hours. Close races, late-arriving ballots, or technical problems could postpone that conclusion. The result may therefore emerge in stages rather than as one nationwide announcement.

Mail ballots affect speed because each ballot requires additional checks. Officials compare the voter’s signature with the signature on file before accepting the ballot. Some states also allow ballots to arrive up to seven days after election day. These deadlines mean the final total may remain incomplete even after polling places close.

Ballot-scanning problems create a different kind of delay. In New York’s Westchester County, scanners stopped working after a software update. Voting continued there, so the problem did not stop people from casting ballots, but equipment failures can postpone processing or require officials to use another counting method. The article also reports that voting was largely free of serious problems overall.

These procedures can make counting slower while supporting orderly verification. A late-arriving ballot is not necessarily unreliable; it must simply meet the relevant state rules. Close contests remain especially vulnerable to delay, while states with faster systems, such as Florida, can usually report totals within hours.

State election officials administer polling places, apply state rules, move stations when necessary, and oversee counting. The article shows this during Florida flooding, when officials moved at least 19 polling stations. Courts provide legal oversight by deciding whether government actions comply with election law. They largely pushed back against the administration’s efforts to intervene.

The Justice Department deployed about 1,000 election monitors across all 50 states. It also sought to make California set aside more than 20,000 mail ballots it said might belong to non-citizens, but the Supreme Court rejected that request. ICE took an enforcement role by warning that anyone voting illegally would be found, arrested, and prosecuted.

These roles are different but connected. Officials conduct the election, courts resolve legal challenges, and federal agencies monitor or enforce laws. The article notes that research and state investigations found non-citizen voting extremely rare. It also says nearly two-thirds of monitored jurisdictions consistently voted Democratic.

The US Constitution gives the 50 states primary authority over the times, places and manner of elections. This reflects the country’s federal structure, in which states administer many public responsibilities rather than receiving every rule from Washington. State control lets election procedures operate through local officials and systems across a large country.

The practical result is a patchwork. Rules for voter identification, postal voting, and ballot-arrival deadlines vary from state to state. Florida usually counts votes within hours, while California and Alaska can take days or longer. Some states wait up to seven days for mail ballots, and officials must verify signatures before accepting them.

This arrangement makes large-scale fraud very difficult, according to election security experts cited in the article, but it can slow the count. It also means national results may not appear all at once. Strong margins can clarify control quickly, while close races in states with slower rules may take several days.