Presidential elections are not like horse races or ball games the most apt analogy I can think of is an unending military campaign (perhaps why they are referred to as election Campaigns)
Trump has won a great victory but it is only a battle in an ongoing campaign. Preparations for the next battle have begun.
The Democrats are sending out scouting parties and are probing the Republican defensive positions seeking out weak spots.
The next major battle will be the midterm election in 2018 but skirmishes will be happening on a nearly daily basis until then.
The Democrats have lost a battle but are not surrendering the field. They are continuing the fight and will not give any amount of further ground without a bitter fight.
The Democrats are not used to losing. The Republicans are on the other hand still unaccustomed to winning and thus not confident in their positions. The Republicans allies also are not comfortable with many of Trumps positions (immigration) and are pushing for Trump to maneuver away from that position.
The Democrats know these weaknesses in Trumps coalition and will probe these weaknesses to drive a wedge in to the Republican lines.
The battle analogy is much better and the stakes are just as high.
Well said.