Roughly a third answered "yes" and those were mostly people who reported having other than a "very strong American national identity." Political orientation was unrelated to likelihood of interest in going expat.
The question phrasing didn't seem to include "or have you already lived outside the U.S." I raise this issue since the DrsC spent a year as civilians on the Asian island of Guam, a U.S. territory with a culture resembling a blend of Pacific Islander and Filipino. I suppose had we be surveyed we'd have answered "yes" as we went to Guam voluntarily and we felt like expats there.
Every time we travel outside the U.S. we ask ourselves if these are places we think we could live and be comfortable. More often than not the answer is "no" but we do come up with "yes" now and again.
However, in nearly 50 years of marriage we've only done it once.
The reason people gave for wanting to live elsewhere sounds very much like our reason.
The simple desire to explore the world.That's also the reason we've spent at least a year living in each of the four U.S. mainland time zones - 2 years in Eastern time, 1 year in Central time, and for over a decade we've split each year between Mountain time and Pacific time. Trust me, you learn things from residing in a place you never experience as a visitor or vacationer.