Image source, AP

Ohio's Republican Governor John Kasich has said he will write the name of Senator John McCain on his ballot paper rather than vote for the party's nominee Donald Trump. It won't count, because McCain is not one of the 18 candidates registered as write-in candidates in the state, the Cleveland Plain Dealer reports, external.

Several leading Republicans have said they will write the name of Mike Pence on the ballot.

Congressional races have sometimes been won by write-in candidates.

Vanessa Barford explains all about written-in voting

When US statistician Nate Silver  - who successfully predicted the result of the last US election in all 50 states -  tweeted this three weeks ago, it went viral:

So, Dave Gilson at Mother Jones has just published, external his analyses of YouGov's data from 22 October to work out who would win the election if only one section of society vote.

Here are his answers:

What if only women voted

Clinton would win

What if only men voted

Trump would win.

What if only white people voted?

Trump would win.

What if only black people voted?

Clinton would win.

What if only Hispanics voted?

Clinton would win.

What if only 18- to 29-year-olds voted?

Clinton would win.

What if only people 65 or older voted?

Trump would win.

The question now, he says, is who will actually turn out to the polls. He says about half of eligible 18- to 29-year-olds voted in 2012, compared with 72% of voters of 65 and older. 

"Trump and Clinton continue to run nearly even in overall vote preferences, with Trump at 46% and Clinton 45% in a four-way contest in the poll conducted Thursday through Sunday," the Washington Post reports, citing the latest Washington Post-ABC News Tracking Poll, external.

"The margin is a mirror 48-47 Clinton-Trump split when third-party candidates are asked which major-party candidate they lean toward, a comparison which has grown in importance as support declines steadily for Libertarian Gary Johnson and the Green Party's Jill Stein," the newspaper says.

The BBC poll of polls (see 12:10 entry) suggested that Mrs Clinton was ahead of Mr Trump.

Read more: Can Trump pull off a Brexit-style upset?

Image source, AP

Newly obtained documents show that in the early 1990s Donald Trump avoided reporting hundreds of millions of dollars in taxable income by using a tax avoidance manoeuvre so legally dubious his own lawyers advised him that the Internal Revenue Service would most likely declare it improper if he were audited, the New York Times claims., external

Mr Trump declined to comment for this article, the newspaper says. 

It claimed earlier this month that the Republican presidential candidate might have avoided tax due to a $1bn (£817m) loss he made in 1995. 

Mr Trump responded by saying this showed he had "brilliantly" navigated the complex tax code. "I understand the tax laws better than almost anyone," he said, adding that as a hotel developer and businessman, he had "legally used the tax laws to my benefit and to the benefit of my company".

Image source, AP

The Clinton campaign has criticised FBI Director James Comey for "blatant double standards" over the new inquiry into Hillary Clinton's email use.

Clinton campaign manager Robby Mook made the accusation after allegations that Russian hackers targeted the Democrats in an effort to skew the election in favour of Donald Trump. 

Mr Comey was against making the hack public before the election, according to US media.

Mr Mook called on Mr Comey to "immediately explain this incongruence and apply the same standard to Donald Trump's associates as he has applied to Hillary Clinton's."

The FBI declined to comment to the BBC.  

Read more on the BBC News website.

A week before the US vote, Hilary Clinton is ahead of Donald Trump according to our poll of polls:

The BBC poll of polls looks at the five most recent national polls and takes the median value, ie, the value between the two figures that are higher and two figures that are lower.  

We are resuming our live coverage of all the latest developments in the run-up to the US presidential election. 

Follow the news and reaction here and also analysis by our correspondents - seven days before polling day. 

Here's a quick recap of today's developments as the election race goes into its final week:

• The FBI has said it found new emails "pertinent" to the investigation into Hillary Clinton's use of private email as secretary of state
• Republican Donald Trump has called the email find the "motherlode", but Clinton told a rally she had nothing to hide
• President Obama does not suspect FBI Director James Comey of trying to secretly influence the election through his announcement of the inquiry on Friday, his spokesman said. 
• CNBC reports that Mr Comey opposed the decision by the US intelligence community to name Russia as being behind the hacks of the Democratic National Committee and Clinton campaign manager John Podesta. Mr Comey is reported to have said he was concerned about it being too close to election day.
• A new national NBC News/SurveyMonkey tracking poll, external suggests Clinton is still six points ahead of her rival - 47% to 41% in a four-way contest with the third-party candidates - but Trump had shown signs of catching up before the latest twist

Barack Obama's ex-chief election strategist has been giving his thoughts on Donald Trump's campaign...

Rajini Vaidyanathan
BBC News

In the last few months I’ve travelled across America, from coast to coast, talking to voters. Both candidates are deeply unpopular. 

Trump’s language towards women has been a turn off for many, including Republicans I’ve met, who adored the Bush family and believe Trump has soured the taste of the party. But almost all of the women who fall into this category told me they aren’t backing Hillary Clinton, because they disagree with her pro-abortion stance. So, on polling day where do they go? Do they hold their nose and stick with their party’s nominee, or go for a third party candidate? 

I’ve also met voters who simply can’t stomach Hillary Clinton, so much that it’s been a driving factor in their support for Trump. And here’s the interesting bit - I’ve met several, white older men who fall into that group, who say they backed President Obama in 2008. 

The polls still favour Hillary Clinton - overall she’s winning with minority voters and women, key groups which Trump would need to win over if he wants the White House. But, based on the conversations I’ve recently had, it feels like any margin of victory for Hillary Clinton will be slim. 

I’m not ruling out a Trump presidency either. He has energised voters in key swing states like Florida, Pennsylvania and Ohio so I’m finding it hard to call these states one way or the other.

Call it a cop out, but two out of every five times I play the BBC predict the president game, Trump wins it. The only poll I’m really relying on is the actual result, on election night. 

You can make a prediction of your own using our Predict the president game. 

Image source, Getty Images

Donald Trump has today drawn parallels between Hillary Clinton's use of a private email server and the James Cartwright case.

Former Marine Corps General Cartwright pleaded guilty earlier this month to misleading FBI agents investigating a leak of classified information about a malicious computer software programme known as "Stuxnet" designed to disrupt Iran's nuclear programme.

The offence of making false statements to FBI agents carries a maximum sentence of five years but a plea deal means Cartwright is likely to spend no more than six months behind bars, when he is sentenced in January. 

Trump claims this is a case of double standards and Clinton should face a similar prosecution.

One major difference between the two cases is that Cartwright was the subject of a leak inquiry - although he did not leak any information himself, but simply confirm details to reporters. There is no evidence that Clinton's actions led to the public disclosure of state secrets.

But FBI Director James Comey, in recommending the Justice Department should not bring charges against Clinton, said there was "evidence of potential violations of the statutes regarding the handling of classified information".

Trump reiterated his pledge to halt the Syrian refugee programme, declaring: "We will keep radical Islamic terrorists the hell out of our country".

He also said the US would provide safe zones for refugees, but make the Gulf states step up and pay for it. 

Anthony Zurcher
BBC North America reporter

So far public opinion surveys have shown little evidence that the fallout from the Mr Comey's announcement has affected the race. Polls were tightening between the two candidates last week, and the few results that have come in since then show a public that is largely ambivalent to the latest news. 

An NBC survey in the field as the story broke had Mrs Clinton with a six-point lead before the news and a six-point lead after. That's probably cold comfort to Mr Comey, who was in a difficult spot no matter how the nation's voters took the news. 

He's at the helm of an agency that is reportedly rife with internal dissent over how to handle Mrs Clinton's case, being pulled in multiple directions. 

Given the preponderance of leaks coming out of the FBI over the past few days, there's little chance news of this new batch of emails would have remained secret for long once Mr Comey made his decision. 

The director may have been trying to do the best he could to get ahead of a story lest it spin out of his control. So he acted - and then it spun out of his control anyway.

Read Anthony's piece in full

Trump appeared at his second Michigan rally nearly two hours later than he was scheduled to appear. 

He amplified his attacks on Clinton and the latest FBI investigation into emails that may be linked to its probe into her private email server while also trying to shore up support from blue-collar workers. 

Emily Maitlis
Newsnight Presenter

Last night, I got home to find my 12-year-old had spent his penultimate day of half term - and my phone bill - cold-calling the US to do his own telephone polls. 

We posted the findings on Twitter, where many of you asked to know more about his choice of states and approach.

Read Emily's blog here

Imagine having to give up your Twitter handle and all your followers and start again from scratch? That's what President Barack Obama will do when he leaves office - sort of. 

From 20 January 2017, @POTUS will be made available to the 45th president of the United States who will retain the account's 11 million followers. But President Obama's tweets will move home to @POTUS44, a newly created handle maintained by the National Archives and Records Administration, and kept as a public archive. There'll also be a copy in the National Archives. 

@WhiteHouse, @Flotus, @PressSec and @VP will also be archived in the same way.

To mark the occasion, Twitter has pulled together 10 of President Obama's best tweets. 

Senator Ted Cruz has become one of the millions of Americans who have already cast their vote.

The AP reported around a fifth of American voters have already filled out their ballots, which is far more than the rate in 2012. 

In battleground states such as Florida, Nevada and Colorado, one third or more of expected voters have already participated, the AP said.

As much as 40% of the electorate are expected to vote before election day.

The FBI tells the BBC it has no comment on the CNBC report, external that Director James Comey ensured the agency's name was left off a statement the US government issued about the Russian government’s role in hacking Democratic Party emails. 

Image source, Getty Images

A new national NBC News/SurveyMonkey tracking poll, external has just been released and it suggests Hillary Clinton is still six points ahead of her rival - 47% to 41% in a four-way contest with the third-party candidates. 

The poll was conducted online from 24-30 October, so includes the views of likely voters after news of the new FBI inquiry linked to Mrs Clinton came out on 28 October. 

As a tweet below from SurveyMonkey's head of election polling shows, how important voters feel the inquiry is very much depends on their political leaning - 93% of Republicans said the issue is important to discuss, but that figures drops to 17% for Democrats.