For me, it was mostly due to her foreign policy and the fact she seemed to stand up to the neocons and neoliberals who were getting us in these forever wars. In terms of impeachment, I think the democrats picked a weak argument. I think they should have attacked him for his ties to the Saudis via the Trump hotel or just his general corruption that benefits Saudi Arabia. I didn’t pay too much attention to the impeachment because I knew there was no way in hell 22 republican senators would flip, and I am also not really that left (I am looking at some of the links people have commented now, but on the political compass I am lib center). I think the democrats tried to impeach him on the wrong thing