While Corbyn is deeply critical of the EU's lack of "democratic accountability," and its push to "privatize public services," he argues that there is a "strong socialist case" for staying in. Corbyn says the EU plays a positive role on climate change, and that exiting the EU would initiate a race to the bottom on issues like equal pay, work hours, vacations and maternity leave. The Scottish National Party, which is to the left of the Labour Party, also opposes a Brexit, and threatens to call for another independence referendum if it passes.
Left parties in Greece, Italy, Spain, Portugal, and Ireland are critical of the EU, but most do not advocate withdrawing. What they are demanding is a say over their economic decisions and relief from the rigid rules that favor economies like Germany, and bar many others from ever becoming debt free.
It is ironic that Germany -- the country that refuses to even consider retiring some of the overwhelming debts that enchain countries like Greece -- owes its current wealth to the 1951 London Conference that cut post-war Germany's debt in half, lowered interest rates, and stretched out debt payments. The result was the "Wirtschaftwunder" [economic miracle] and the creation of an industrial juggernaut. Greece's Syriza Party has long called for such a conference to deal with the EU countries mired in debt.
There is no secret why Germany, France and the European Banks oppose debt reduction, or "haircuts": Between the three of them they hold almost $84 billion of Greece's debt
The polls show the British electorate could go either way on a Brexit. What happens if they do leave is hardly clear, because it would be a first. The predictions range from doom and gloom to sunny days, and everything in between, although it is doubtful the EU would severely punish Europe's second largest economy.
One model the left needs to look at in this battle is Portugal, where three left parties, who have long fought with each other, found common ground around reversing the austerity policies that have racked the country's economy for four years. Portugal just recently received a barely favorable bond rating that gives the coalition government some breathing room. The economy is growing and unemployment down, but at 129 percent of GDP, Portugal's debt burden is still the third highest in Europe.
Alone, Portugal is no match for power of the Troika, but Lisbon has allies in Spain, Greece, Ireland and increasingly, Italy. Support for the EU in Italy has gone from 73 percent in 2010 to 40 percent today. "Europe has taken the wrong road," says Italian Prime Minister Matteo Renzi. "Austerity alone is not enough."
Given the absence of a strong, continent-wide left, however, reversing the current economic rules of the EU may be a country-by-country battle.