This election is a strange one.
First turn, there were 4 major parties sharing about a quarter of the votes each, plus outsiders. This is unusual. Normally there are two major parties, like in many countries. Out of two traditional parties, the right wing candidate arrived 3rd and didn't pass and the left wing candidate ended up as one of the outsiders.
The result is that we now have two candidates that most of the population doesn't want. Meaning that many people will vote Macron to prevent Le Pen from passing and others will vote Le Pen just to go against Macron. Many people want to damage Macron, not just Le Pen campaigners.
Anyways, for the presidential elections, the game is pretty much set : Macron will win. The polls give him about 60%, Le Pen is just too unpopular for anyone but her supporters.
However, the presidential election will be followed by the parlement elections, and this is where the real game is being played now.