Not that Corbyn would ever accept the will of the party members (2nd ref unanimous), but on the basis of voters sounds like 2ndRef is likely to be fully dead from Labour, if the PLP takes this vote as indicative:
Voters less likely to back Labour with 'stop Brexit' policy, leaked poll suggests
From the IWCA:
“Coming out unequivocally against Brexit damages Labour less in purely electoral terms than coming out for it, as much of Labour’s working class base deserted the party long ago. The Oxford researchers Jon Mellon and Geoffrey Evans found in 2014 that ‘Labour’s move to the ‘liberal consensus’ on the EU and immigration left many of their core voters out in the cold a long time before UKIP were an effective political presence. These voters left Labour in 2001, 2005 and 2010.’ Labour accepting the liberal agenda on first Brexit, and then presumably everything else, only further exacerbates this process.
If one wants to give the Corbyn leadership some credit, one might say they at least have some vestigial awareness of the danger taking this path entails. When Transport Secretary Chris Grayling recently said that blocking Brexit would 'open the door to extremist populist political forces in this country of the kind we see in other countries in Europe’, Labour’s David Lammy accused him of ‘gutter politics’ and ‘appeasement’ while Nick Ryan of Hope Not Hate said the remark ‘simply plays into the hands of those extremists seeking to use Brexit as a platform to boost their profile.’
While Grayling’s timing may well have been cynically motivated, the observation is not wrong. What most of the political, economic and media elite have wanted since the Brexit vote is as close to neo-liberalism as usual as possible, with the minimum of disruption emanating from this democratic aberration. Should they succeed, any semi-competent populist right movement would be able to adopt a narrative of class and democratic betrayal, and position themselves as the alternative to the entire condescending liberal establishment. It’s a narrative that would have resonance for one simple reason: there would be a good deal of truth to it.
And where the BNP took over half a million votes at the 2010 general election, close to a million in the 2009 Euro election, and UKIP 3.8 million votes in 2015, this narrative would in the first instance have a pool of 17 million disproportionately working class Leave voters to pitch to. So while middle-class ultra-Remainers like to pitch the idea that Brexit = fascism, it is the contempt for democratic expression, and the longer-term fundamental retreat from class politics by the left, that creates the imminent risk. Furthermore, there is nothing the Labour party can do to address this: it is a task for the class itself and those who believe in it as the ultimate agent of change.