Elon Musk’s attachment to President-elect Donald Trump has created an unprecedented alliance between America’s most powerful politician and its richest businessman. Roughly the same percentages of Americans have favorable views of both of them, according to a new poll from the AP-NORC Center for Public Affairs Research. Experts are split on whether that overlap in public opinion is a good or bad thing for Musk’s businesses or for Trump’s politics. But it could have far-reaching effects in both realms. Musk, whose net worth tops $400 billion, oversees six businesses while continuing to work closely with Trump. And for Trump, Musk is an important validator with his conservative base.