Is the attempt to undo Obamacare a gift Democrats can use?

Sometimes I think its his desperate attempt to divide the country's attention. While making sure his base is celebrating his imaginary exoneration; he masterfully has moved the conversation for the rest of the country to healthcare. We live in fear of what he may undo next. Women rights, voter rights, children's education, infrastructure and while we are still reeling from a wave of anger on one issue; he inflicts another one. 
The country is not on one back foot; we need a lot of back feet here. It is an onslaught on our rights. 
After 70 attempts to repeal Obama Care, you would think - he would be done. But this is what keeps his base happy; so he does not care for the rest of the country and the impact of his short sightedness on the basic human rights of the people who he serves.

Could this damage the republican party, damaging their prospects in the 2020 presidential election ? 
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When Republicans passed their tax bill in 2017, they nixed the “individual mandate”—the surtax Americans have to pay if they do not have health insurance. Republican-led states then sued, arguing that this meant that the entire law—which was upheld on Congress’s power to tax—was invalid and needed to be struck down. The Department of Justice (DoJ) had previously struck a more muted tone, arguing that only a few provisions—like guaranteed coverage for people with pre-existing medical conditions—should be struck down. But this week the DoJ, at Mr Trump’s direction, announced that it was now in favour of striking down the entire law ahead of a hearing by the Fifth Circuit, the appellate court which will review the Texas decision.

What will happen if Obamacare were repealed successfully ?

11m people have health insurance through the public exchanges set up by the law; 12m people gained health insurance through the expansion of Medicaid, the government programme for the very poor. Young people have become used to staying on their parents’ health-insurance schemes until the age of 26; older people have become used to signing up for insurance without facing price discrimination for any pre-existing medical conditions they might have. All these people will lose their cover 
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