A little more on the news we brought you in the past hour: prosecutors are investigating suspected "fraud" and "breach of correspondence secret" in their hacking inquiry, AFP news agency reports.

About nine gigabytes of documents were leaked on a file-sharing website late on Friday by an anonymous user.

Mr Macron's En Marche movement said internal campaign documents, including emails and financial data, had been taken several weeks ago in an "act of massive, co-ordinated hacking".

French voters have been posting some amusing tweets about the election - and France Info has compiled, external some of them.

This voter noticed an election official with an "Underwood 2016" T-shirt - a reference to the main character in the House of Cards TV series, which chronicles backstabbing and underhanded dealings in the political world.

It's the "best election official t-shirt ever", the voter says.

Voters have also been taking papers with joke names on that they printed at home into voting cubicles and photographing them there.

France Info describes this practice as an "election classic".

This voter was "voting" for French NBA basketball star Boris Diaw of the Utah Jazz.

"Let's be serious - there's no better president," he says.

A pollster says the fall in turnout appears to be less in areas where Le Pen got good results in the first round. This seems to confirm that a low overall turnout benefits Le Pen.

The BBC's Nuala McGovern has sent this picture of monks at a polling station in the southwestern city of Bordeaux.

BBC producer at the Le Pen event in Vincennes tweets:

Voters at a polling station in the village of La Lande-Chasles in western France are being asked not to use the front door as a family of five great tits is nesting in the letter box. A lot of French media are tweeting about this.  

The BBC's Hugh Schofield reports from a polling station in the capital's 17th arrondissement.  

Polling firm Kantar is saying that based on turnout so far, the overall abstention rate - people who do not show up to vote - will be about 26%, the highest since 1969.

Both Macron and Le Pen are now at their election headquarters in Paris, Le Parisien reports., external They traveled in from the same region, Pas-de-Calais, where they cast their votes in different towns.

About nine gigabytes of documents were leaked on a file-sharing website late on Friday by an anonymous user.

Macron's En Marche movement said internal campaign documents, including emails and financial data, had been taken several weeks ago in an "act of massive, co-ordinated hacking".

A number of French media outlets have been banned from attending the election night gathering of Le Pen's National Front, Le Figaro daily reports, external. 

Stephane Jourdain of BuzzFeed News France tweets: "There are about 10 outlets banned from the FN election gathering. How many more need to be banned before we start to worry?"  

The French interior ministry has just reported a sharp fall in turnout as of 17:00 (15:00 GMT), compared to the previous two elections. They gave 65.3% compared to 71.9% at this stage on election day 2012 and 75.1% in 2007.

Law and order and the continuing terror threat are major issues in the polls. At least 238 people have been killed in jihadist attacks in France since 2015, according to recent data from AFP. So where do the candidates stand?

Macron:

1. Recruit 10,000 new police officers 
2. Expand prisons to house an extra 15,000 
3. Give all religious leaders comprehensive training in France's secular values 

Le Pen:

1. Recruit 15,000 new police officers 
2. Create 40,000 extra prison places 
3. Automatically deport all foreign criminals and foreigners with Islamist links 

Image source, Getty

The event will be held at the Bois de Vincennes outside Paris - the BBC's Thomas Fessy will be there with Le Pen's team.

His producer Larissa Kennelly just sent us this picture of staff getting ready there...

Image source, Larissa Kennelly

Their positions on Europe, and indeed on whether France should remain part of the European Union, could not be more different.

Macron wants to:

1. Reform the EU by giving the eurozone a separate budget, finance minister and parliament (MEPs from the 19 countries that use the euro)
2. In Brexit negotiations, insist that EU Single Market rules apply fully to all trade partners
3. Promote free trade deals like Ceta - the EU-Canada deal

Le Pen wants to:

1. Negotiate with the EU to repatriate powers to France and reform the bloc, then hold an in/out referendum on France's EU membership
2. Restore full border controls, leave the Schengen open borders system, appoint 6,000 new customs officers
3. Scrap the EU posted workers directive, to block competition from foreign workers in France.

Here is President Hollande visiting a sport centre just after voting in his home town, Tulle.

Image source, EPA

When he declined to stand for re-election, his Socialist Party picked Benoît Hamon (below, voting today) as its presidential candidate. Hamon crashed out of the contest in the first round and now the Socialists are facing a long, hard look at their future.

As we've mentioned before, there's a strict ban in place on reporting all but the basic details of this election for another three and a half hours or so.

Try telling that to one Belgian broadcaster, that has just dropped a projected result. We're saying nothing more about it, so will just leave this comment by our Brussels bureau producer...