The average family is not a group of political activists, driven by irrational sentiments and visions of paranoia or utopia. They are regular practical minded people, concerned about the present and future of their immediate family. A strong economy caters to the needs of such people. Their need for a way to achieve family security, will benefit by voting for Trump.
The left is proposing things that sound good and/or appease fear, but will destroy the economy, for everyone except those in power. Try an experiment where you don't use any fossil fuels; gasoline for your transportation or buy anything that uses gasoline for market transport. Also stop using things that indirectly use fossil fuels; electricity as well as stores and factories, to simulate the vision of the green deal. This alone will lead to a collapse of the economy and all types of hardship. No family wants a future of food lines, while those on power get to live anyway they want.
For example, watch any of the Democrat leaders, who are promoting the green deal, as they fly around the country in private and chartered jets, living large. This sets the example of someone who has all the time in the world. The changes they propose is for everyone, except them. Government workers are not on ObamaCare, nor will they be on the green deal. They do not want the crap deal they want to give to the extensive peasant class they hope to create.
Most practical minded people see this. The only chance the Democrats have is to lie, cheat and crap on Trump's parade. This is why they spend the country's time creating intrigue, looking for mud, and suggesting all types of changes to the Constitution; voting laws, such as allowing pets to vote.
Trump has achieved tangible results; economy, that goes beyond the startup rhetoric and promises. Reality, to the practical minded family, will mean more than promises, that do not have to be kept by the shady political class.