The results of the US presidential election were too close to call on Wednesday morning, and with six battleground states still up for grabs, both Donald Trump and Joe Biden still have several paths to victory.

In the rustbelt, Wisconsin, Michigan, Pennsylvania are still in play, while in the south, North Carolina and Georgia are hanging in the balance. Out west, ballots in Nevada are also still being counted.

As a result, in the complicated US electoral college system, neither Mr Trump nor Mr Biden has yet hit the crucial 270 electoral vote threshold to win the White House.

Election results so far

As of 11am EST, Mr Biden, the Democratic former vice-president, had racked up 238 electoral college votes, including 11 from Arizona, which Mr Trump won in 2016. Mr Trump had 213, after winning 29 votes from the hotly contested state of Florida, according to Associated Press projections.

As the final states tally their remaining votes, here are some possible outcomes.

Biden can top 270 votes by winning Pennsylvania and Michigan

The Biden campaign has pinned its hopes on building a so-called “blue wall” across the upper Midwest and rustbelt. Pennsylvania, which has 20 electoral college votes, is seen as crucial. Winning there would pave the way for a Biden victory, so long as the Democratic candidate also picks up Michigan’s 16 electoral votes, bringing his electoral college total to at least 274.

Both states are still counting mail-in ballots, which have skewed heavily Democratic nationwide. But results are expected to be nail-bitingly close and could be contested. Four years ago, Mr Trump won Pennsylvania by 44,000 votes, and Michigan by an even narrower margin of just over 10,000 votes.

If Biden loses Pennsylvania, he will need to win Michigan, Wisconsin and one other state

Long before the polls closed, Democratic and Republican analysts alike said Pennsylvania could prove to be the “tipping point” state, shifting the balance of the electoral college in either candidate’s favour.

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Given the current map, Mr Biden does not technically need to win Pennsylvania in order to win the White House. If he loses Pennsylvania but picks up Michigan’s 16 electoral college votes, plus another 10 in neighbouring Wisconsin, he would need to win just one other state to hit 270 now that he has been declared the winner of Nebraska’s second congressional district, which covers most of metropolitan Omaha. Just two states — Maine and Nebraska — allocate electoral votes by congressional district, rather than a winner-takes-all system.

Arguably, the most likely win for the Biden campaign would be Nevada. As of Wednesday morning, the “Silver State” and its six electoral college votes were too close to call. But the former vice-president looked on course to pick up more support in the metropolitan areas of Las Vegas and Reno, which skew Democratic. Local authorities in Nevada are not expected to finish their count until Thursday at the earliest.

Trump’s easiest path to victory involves winning Pennsylvania

The Trump campaign is singularly focused on winning Pennsylvania. Mr Trump will need to maintain his current lead in the “Keystone State” as mail-in votes are counted, and pick up states such as North Carolina, which has 15 electoral college votes, plus Nevada.

If Trump loses Pennsylvania, he must win Michigan, Georgia and North Carolina

If Mr Trump cedes Pennsylvania, then his path to re-election is narrower. He would need to defeat Mr Biden in Michigan, Georgia and North Carolina, as well as either Nevada or Wisconsin, in order to stay in the White House.

Additional reporting by Kiran Stacey in Washington

Via Financial Times