Buenos Aires, Argentina, Oct 23: Polls have opened in Argentina's presidential election, where President Cristina Fernandez is expected to win a landslide victory over six rivals.

If she does win, she'll be the first woman to be re-elected as president in Latin America. But it also will be a bittersweet victory for Fernandez. It is her first in a lifetime of politics without her husband and predecessor, Nestor Kirchner, who died of a heart attack last Oct. 27.

Fernandez can win with as little as 40 percent of the vote if none of her rivals comes within 10 percentage points of her, but the latest polls suggested she could capture between 52 percent and 57 percent of votes.

Also at stake is control of congress.