Looked at this way, Mitt Romney's infamous "47 percent" comment might have been "60 percent" and remained within the boundary of political truth. Which, of course, only would have made it more catastrophic.
Fortunately for people who earn more than they consume and pay more in taxes than they collect in benefits, American voters are not, as individuals, moved only by their individual economic considerations. Democrats wonder "what's the matter with Kansas?", meaning that they are bewildered by voters who "need" more from government but vote against the party that would deliver more. And there are of course people in the top two quintiles who vote for more "free stuff" even though it comes out of their own pocket. Indeed, the real fights in American politics are often about questions of values or symbols that influence identity far more than mere money. That does not mean they are any less often available to be traded for votes, but they are certainly less susceptible to rendering on a graph.
We see the economic and non-economic considerations most acutely in the candidacy of Donald Trump. He guns for the popularly "undeserving" rich by proposing to tax carried interest as ordinary income, which hurts the "hedge fund guys" and will surely result in more "free stuff" for some people in lower quintiles. He argues forcefully for reduced immigration on that basis as well -- an influx of low-skilled workers who compete against our least-skilled certainly depresses the wages of workers in the lower two quintiles. But Trump also appeals to American identity, with most of his rhetoric around "winning," national greatness, and a fundamentally traditionalist view of American exceptionalism, including some of its best (leadership) and worst (nativist) strains. Whatever one thinks of Trump, his meritage of "free stuff" and inspirational themes feels like a winner -- or might be if it were polished up a bit and disassociated with Trump the man -- however much the mixture offends both the ideological purists and the politically correct.