Here she answers the questions you sent to her election diary.
Read Caroline Wyatt's election diary
What is the key election issue for the majority of French voters? Are they focused on major social and domestic issues, such as those arising from the 2005 riots in the Parisian suburbs? Or are European issues pre-occupying voters' minds?
Darren Burgess, Edinburgh, Scotland
The election campaign has been almost entirely focused on domestic issues.
Fears over joblessness and a stagnant economy are the main worries, along with anxiety over the rising cost of living.
Many of the people we've spoken to cite "precarite" as their main worry - the feeling that life is unstable and the future uncertain. The less-qualified are finding it especially hard to make ends meet at the end of every month, with petrol and gas bills rising faster than wages.
The other related issue is "delocalisation", with many skilled manual jobs being outsourced to cheaper workers abroad in Eastern Europe, Northern Africa or even India and China.
"European or global issues come a poor last to domestic worries"
Nicolas Sarkozy and Jean-Marie Le Pen have both campaigned on and benefited from fears over insecurity - and the violence in the suburbs in 2005 - across the country.
The recent set-to at the Gare du Nord station in Paris saw Mr Sarkozy's poll ratings rise sharply, as voters veered to the right on law and order.
There are also fears over rising crime and violence generally, even though figures from the interior ministry show that crime has fallen in many areas.
European or global issues come a poor last to domestic worries. Globalisation is the one issue they all talk about, in varying terms, but rarely positively.
This election will be won or lost on home ground. Whichever candidate can persuade the French that she or he can keep them safe and sound while improving the economic situation is likely to win - and at the moment, Mr Sarkozy is strongly in the lead on economic issues, even if many on the left fear he would be a deeply divisive president.
Which candidate has the best solution for getting France out of its economic problems?
Franck, Los Angeles, USA
Seen from an Anglo-Saxon or US perspective, Mr Sarkozy has the most comprehensive economic policies and a thorough reform agenda.
Most entrepreneurs support him, as does big business, believing he would deregulate and loosen France's rigid labour market and make the country a more appealing location for investment.
Mr Sarkozy's main election platform is a promise to make the French value work again, and to let those who want to work longer hours and earn more money do so.
It may seem remarkable in a post-Thatcher or post-Reagan world, but his slogan "work more to earn more" has been deeply controversial on the left in France.
On Wednesday night, many speakers at a Socialist rally in Metz criticised his campaign slogans, saying that employees would not have a choice as to whether they wanted to work more or not, but might be forced to do more than the 35-hour week.
One trade unionist at the rally also criticised him because "he would make people compete against each other".
Mr Sarkozy would also like to make it easier for employers to hire and fire employees, and has promised to cut red tape and bureaucracy.
The Socialist candidate Segolene Royal has focused far more on social justice in France, and the need to ensure fairness in access to jobs. Her main economic platform involves creating "first-time jobs" for the young and using the state to intervene if companies are not co-operating.
She has also promised to raise the minimum wage to increase people's spending power, though without spelling out in detail exactly how her economic reforms would be funded.
Her platform is very much the traditional French Socialist one: the state will provide for those who can't provide for themselves, while the greed of capitalism must be reined in.
Francois Bayrou does have an economic policy, but it is slightly sketchy on detail and on how it would be funded. Generally, he tries to steer a middle course between traditional left and right-wing economics, promising that he would find a suitably Social Democratic way ahead for France.
Mr Le Pen has tried to put together an economic manifesto for this election, having been accused of lacking one last time, but it still appears to be based on his 'France first' policy, with jobs going to the French first rather than immigrants. Otherwise, his economic policies are also rather sketchy.
Of all the candidates, who would you consider to be the most EU-friendly French President?
Stephen Clark, Pickering, North Yorkshire, UK
Of the three main candidates Mr Bayrou is the one most attached to Europe and the European ideal.
All three would be EU-friendly in different ways, but he speaks of the EU - and France's need to play a constructive and leading role in Europe - with personal conviction.
"Many hope these elections will result in a fairer and more inclusive France"
In recent weeks, though, he has adopted a more nationalistic and sometimes protectionist tone over French industry, which usually goes down well with French voters.
Ms Royal would continue relations in the traditional Socialist mould. She has said that relations with Europe - and taking a leading role in Europe - would be among her priorities, and seeking Europe-wide solutions for the economy.
In the main, the French feel that their influence in Europe has diminished greatly since its expansion to include Eastern Europe.
Unemployment has been a huge problem in France for some time. Do any of the candidates have a real plan for dealing with it?
Terri Parris, Houston, Texas, USA
All have policies for dealing with it.
Mr Sarkozy probably has the most comprehensive model of reform.
He has put dealing with joblessness at the centre of his election manifesto, with detailed plans on cutting red tape, freeing employers to hire and fire more easily, allowing workers to do more than the 35-hour working week if they choose to do so, and for reducing the size and cost of state bureaucracy.
Segolene Royal has promised more social justice, a higher minimum wage and new jobs for the young, but some economists have criticised her policies for both their cost, and in some cases their old-fashioned, state-interventionist nature.
Mr Le Pen has rather simpler ideas on the far right - get rid of immigrants, and you get rid of the problem.
Do you get the feeling that immigrants - or French-born people from immigrant families - are keen on participating in the upcoming elections? Do they think the elections can result in a more inclusive France?
Rashed Chowdhury, Montreal, Quebec, Canada
I think that immigrants - or rather children and grandchildren of immigrants - are extremely keen to make their voices heard in this election.
A group called AC le Feu has been campaigning in the suburbs, urging people to vote. The campaign has been very successful, with more young voters than ever before registering to vote.
Many hope these elections will result in a fairer and more inclusive France.
Over the past weeks, talking to people from immigrant families in Marseilles, Paris, Tours and Metz, I have heard over and over again the same sense of exclusion and difference, and stories of discrimination and unfairness.
Most people say all they want is a fair chance - to be included in the job market, and not have their CV thrown away because their name is Fouad rather than Philippe.
Who appeals most to ethnic minority voters?
James Mutambuki, Nairobi, Kenya
Impossible to say. Ethnic minority voters have opinions as varied as all other voters.
Some pollsters say Mr Sarkozy is unlikely to get votes from ethnic minority voters in the poorer suburbs - but from speaking to people in Marseilles, Paris, Poitiers, Valenciennes, Tours and Metz over the past few weeks, that may not be true.
There are those who support him, and say that in fact, his idea of a Ministry of National Identity may not be such a bad idea after all, if it helps mould France together.
" It would be Ms Royal who would be the most upset if Mr Le Pen got into the second round"
He was seen as being very down to earth and approachable, and not as much part of the system as the other candidates, which appealed to many - especially the young.
Perhaps the biggest surprise of all is that some from immigrant backgrounds in France are planning to support the far right leader Mr Le Pen. They say that he is right to want to limit further immigration, and that France has enough immigrants already.
Do many people you have met believe that Bayrou can beat Segolene Royal in the first round of voting and go on to challenge Sarkozy?
Sadeghian, Cannes, France
No. Though this being France - and always prone to springing election surprises - you never know.
Looking at the opinion polls, his initial surprise leap ahead seems to have worn off slightly, though he remains a tempting choice for those who dislike both the other main candidates.
He is also much loved by the 'bohos' - the bourgeois bohemian offspring of the 'gauche caviar' or champagne Socialists of the Left Bank in Paris. They believe that a Social Democrat-style politician is exactly what France needs.
Farmers and teachers like him, too, as he seems extremely human, rather than part of the political establishment (even though he has long been part of the establishment).
But it looks unlikely that he can beat Segolene in the first round, though if he did - the polls suggest he would beat Sarkozy in the second.
In the last presidential election, when Le Pen surprisingly got through to the second round, the socialist candidate dropped out to ensure the re-election of Chirac. What would Sarkozy and Royal do if Le Pen got through this time?
Brendan O'Brien, Watford, UK
Presumably it would be Ms Royal who would be the most upset if Mr Le Pen got into the second round, as - if the opinion polls are correct - Mr Sarkozy is almost certain to be in the second round.
Such a result would force the Socialist party to have a long, hard look at itself. It is already a deeply divided organisation, with many of the older party leaders (or 'elephants') disliking Ms Royal as a candidate.
As for a Le Pen-Sarkozy run-off, Mr Sarkozy would win.
People in France may vote for Mr Le Pen in the first round, but not even all of his supporters actually want the 78-year-old as president.
He is often seen as a protest vote and a safety valve - a way of allowing voters to let off steam against the establishment.
However, in this election he has succeeded in making his agenda (patriotism, immigration, national pride, the question of French identity) part of the mainstream debate, while Mr Sarkozy is also clearly trying to eat away Mr Le Pen's support, which is as high as 16% or so this week.
In Canada and the US, the segment of the population that votes least is the poor. The lower down the economic ladder, the lower the percentage of voters. Does this apply in France? Are there rural vs. urban voting patterns, or other significant demographic splits?
C Alexander Brown, Rockcliffe Park, Canada
The same principle applies in France, despite attempts to encourage all voters to go to the polls.
The over-50s, 60s and 70s are the most likely to vote, with the youngest the least likely.
Likewise, the professional middle-classes and above are also the most likely to cast their ballot, with the most disadvantaged the least likely.
However, the weather also has an impact.
At the last elections in 2002, many Socialist supporters took the opportunity that weekend to go to their weekend houses in the countryside, and failed to cast their vote before they left the cities they were registered in.
That complacency helped cost Lionel Jospin the election.
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