PARIS — President Francois Hollande's girlfriend set the French political establishment aghast Tuesday with a tweet seen as a dig against his ex-wife.

The tweet of support to Olivier Falorni, a politician in western France, was signed by Valerie Trierweiler and went viral on the Internet and dominated news shows.

It was seen as a dig at Segolene Royal, the mother of Hollande's four children. Royal, also a former Socialist presidential candidate, is running against Falorni in the Charente-Maritime region in Sunday's parliamentary elections final round.

The tweet starts: "Have courage, Olivier Falorni." But it is easily interpreted as a not-so-veiled dig at Royal.

The Socialist Party recently banished Falorni for failing to step aside in favor of Royal, so he is running as a dissident candidate. After last Sunday's first-round vote, Royal holds a narrow lead over Falorni.

Trierweiler, a journalist and avid tweeter, has made no secret of her determination to retain her independence, or of her discomfort with the image and chores of a first lady.

Her employer, Paris-Match, barred her from working as a political reporter after the May 6 election of Hollande, although it has allowed her to stay on as a book reviewer. Her first review, published last week, was of a biography of Eleanor Roosevelt, the wife of ex-U.S. President Franklin D. Roosevelt, and began: "Look at that! A journalist first lady isn't a novelty."

Television news coverage Tuesday was dominated by the tweet, along with speculation about why Trierweiler would make such a bold foray into the political arena that risks bringing discredit to Hollande – and is indirectly aimed at the woman who for decades was his companion.

"Either she is blinded by jealousy ... or it's a well-calculated political coup" to puncture Royal's chances, ventured the chief political analyst for BFM TV, Olivier Mazerolle.

The relationship between the two women is known to be tense, fuelling a variety of explanations as to why she sent the tweet.

One such explanation suggested that Trierweiler is fearful of Royal again getting close to Hollande.

Royal has said that if she wins in Sunday's parliamentary elections she would then seek the role of speaker of the National Assembly, the lower house, guaranteeing almost daily contact with the president, and father of her four children.

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  • Her Roots

    Valerie Trierweiler is the fifth of six children. <a href="http://www.guardian.co.uk/world/2012/apr/23/francois-hollande-partner-first-lady" target="_hplink">According to the <em>Guardian</em>,</a> her mother worked as a cashier and her father -- who stepped on a landmine at the age of 13 -- died when she was 21.

  • Her Career

    After studying at the Sorbonne, Trierweiler became a political journalist and worked for the French magazine <a href="http://www.parismatch.com/" target="_hplink"><em>Paris Match</em></a> and the cable network <a href="http://www.direct8.fr/" target="_hplink">Direct8.</a> Trierweiler covered politics for about two decades, but announced at the start of Hollande's campaign that she would shift away from politics to report on the arts. Trierweiler has vowed to keep working for <em>Paris Match</em> as Hollande assumes the presidency, making her France's <a href="http://www.guardian.co.uk/world/2012/may/06/valerie-trierweiler-france-first-lady?" target="_hplink">first woman to work while serving as 'Première Dame'. </a>

  • Her Outrage

    Trierweiler was reportedly furious when Paris Match put her on the <a href="http://twitpic.com/8ti2qt" target="_hplink">cover</a> of the magazine with the controversial headline, 'Valerie. Hollande's Charming Asset.' Upon seeing the cover, <a href="http://twitter.com/#!/valtrier/status/177689767792738305" target="_hplink">Trierweiler tweeted:</a> "Bravo Paris Match for its sexism .. My thoughts go out to all angry women."

  • Her Last Name

    Born Valerie Massonneau, Trierweiler has been <a href="http://www.guardian.co.uk/world/2012/may/06/valerie-trierweiler-france-first-lady" target="_hplink">married twice before</a> and has 3 children from her second marriage with journalist <a href="http://destandaard.be/artikel/detail.aspx?artikelid=GD33PNMDM" target="_hplink">Denis Trierweiler.</a>

  • Her Relationship With Hollande

    Hollande and Trierweiler reportedly started their relationship in the mid-2000s, although they first met two decades before. Trierweiler was still married at the time, and Hollande was living with former French presidential candidate <a href="http://en.wikipedia.org/wiki/S%C3%A9gol%C3%A8ne_Royal" target="_hplink">Segolene Royal.</a> Hollande and Trierweiler took their relationship public in <a href="http://iphone.france24.com/en/20120313-france-first-lady-gentleman-hollande-trierweiler-sarkozy-bruni-bayrou-le-pen-aliot" target="_hplink">2010</a>. Trierweiler told Elle magazine that the French socialist was "<a href="http://www.guardian.co.uk/world/2012/apr/23/francois-hollande-partner-first-lady" target="_hplink">the man of her life.</a>"

  • Her Celebration

    After it became clear Hollande had won the presidency, <a href="http://twitter.com/#!/valtrier/status/199208369570070528" target="_hplink">Trierweiler tweeted:</a> "Simply proud to accompany the Republic's new president and still so happy to share the life of Francois."