It's had limited policy impact because the electoral system limits the scope of viable alternatives and both major parties have leveraged other divisive issues to keep the wide opposition to neoliberal policies from being electorally decisive.
The only real question given the durable and strong opposition in the electorate (cutting across the usual left/right divide) to neoliberal globalization, was which major party would, rather than diverting from that, harness the opposition by nominaing a candidate willing to at least rhetorically reject the neoliberal globalist elite consensus first.