Speaking personally as a brit i'm not going to comment on whatevers going on with the american election but in the case of britain at least im absolutely not going to be voting for Keir Starmer since most of the left neoliberals in this country telling me i have to swallow my pride and vote for the most right wing and second worst (to his "credit", unlike Tony Blair, he doesnt have the blood of a million iraqis on his hands, only 30,000 palestinians) party leader labour's had in recent memory were the exact same people 5 years ago saying they couldnt in good faith vote for the most far left, trans positive labour leader in decades because he criticised Israel which led to the largest conservative majority in years.
Under Sir Kid Starver, Labour stopped members from voting for a ceasefire right at the start of the Palestinian genocide, members have repeatedly been expelled over bogus antisemitism charges, starmerite labour's trying to push to have the NHS privatised, the party has pivoted so far to the right that you have promiment members saying “Margaret Thatcher was a visionary leader for the U.K; no doubt about it", they've proposed policies to segregate trans people out of single sex NHS hospital wards and those are just the things from the last few months or so that i remember off the top of my head.
I'm going to vote for the Greens instead.