O’Rourke moves toward a 2020 race he could upend, ready or not

But perhaps no major 2020 player invites as many question marks as Mr. O’Rourke, and his drawn-out non-candidacy has provided few answers:

Is this the moment for a relatively untested white male in a party eager to elevate female and nonwhite voices in the quest to dethrone President Trump?

Can Mr. O’Rourke scale up to a national campaign without losing the intimate, semi-improvisational feel of his perpetually live-streamed Senate bid?

And in a primary where some top candidates have already sought to establish progressive litmus tests on key issues, what does Mr. O’Rourke actually believe?