UK socialists may well think that the Democrats are not left wing. They may also wonder why, with two allegedly right wing parties, the US is an economic powerhouse whilst the economy of their extreme left wing opponents during the Cold War lagged way behind and is, at last, turning towards capitalism to effect increased economic growth.
But I don't think they'll spend too much time "wondering" but will soon go back to their fallback position......spending endless hours crying on each others shoulders about why someone else hasn't done enough for them and trying to justify why they should be enriched at the expense of others.