|Marine Le Pen and Geert Wilders - a devious destructive duo|
"It has become a realistic danger," said Gabriel, a center-left Social Democrat.
If Le Pen does win the election, the idea of European unity would not disappear, Gabriel insisted. "But without France's engagement, Europe is certainly unimaginable in the long run," he went on. "First and foremost, the French would be the first to feel the effects of a so-called Frexit.
"Because the results of such uncertainty about Europe's future would be of course capital outflow, absent investments and mass unemployment," Gabriel said.
Macron remains the frontrunner in the election race, with 39 percent of those consulted in the latest survey by pollsters Ipsos giving him a favorable opinion. In the poll, Le Pen is the favorite to win the first round in April with 35 percent of the vote.
In the poll released by the magazine "Le Point" on Wednesday, Macron was followed by Socialist candidate Benoit Hamon, with 38 percent, while former frontrunner Francois Fillon had fallen 18 percentage points to 25 percent, just behind Le Pen, at 26 percent.
Read more: Gabriel warns of Le Pen winning French presidential election | News | DW.COM | 15.02.2017