There are no leftist parties in Italy. You could only pick between mild neoliberal, full neoliberal, old-school liberal and a few different flavors of proto-fascists.

Unions in Italy are the only bastion of the left wing, especially now that Landini decided he’s not a wishy-washy institutional moderate anymore and he wants to enter Valhalla dying in battle.

As will most likely be the case in the US, the overlap between those striking and those who voted for the govt causing the need for said strikes is probably pretty small. Not nonexistent, of course, as there will always be those who fell for the propaganda and realized too late, or those who simply can’t acknowledge that their chosen govt caused this, but generally those who understand the need for strikes are aware enough to not vote for the people who cause them to be necessary.

You say that as if Italians had the option to elect a government that wouldn’t be doing this to them. But it’s a rigged game, much as it is in Canada and the US. The Eurozone run by the cartel of European private banks, much like the US Federal Reserve is just the cartel of US private banks. It’s structurally neoliberal, austere, and anti-Keynesian, because deficit spending above nominal amounts is forbidden.