Most likely not, but it is more likely than sitting at home and doing nothing.

Could be, but applying pressure to stop those fat checks the US government sends to Israel is probably pretty good for the Palestinian people as well.

Voting is the absolute smallest political action anyone could ever take. Protest always has been and always will be more effective at moving the needle. Above all else these ghouls want to preserve capitalism. If it looks like the only way they preserve capitalism in the near term is capitulating to the demands of environmentalists then that is what will happen. Of course in the long term capitalists will attempt to erode these gains just like they have done with social safety nets in various countries for largely the same reasons (increased rate of profit).