It's the losers who will determine the winner in France's presidential race. There are various shades of endorsement between those saying they're ready to work with Macron, those who insist it's simply an anti-Le Pen vote... and those who see no issue in rejecting both. What are the pros and cons of abstaining? Could Macron still lose? The underreported story of the first round may be just how deep the far right has managed to establish roots and consolidate them.