I just voted and wish to clarify issues I discovered to others who will vote using keychain:
- Click on the check-box(s) next to your choices BEFORE clicking to log in and vote.
- Do NOT put the @ symbol in front of your username when entering your Steem account name.
Oh! Good call! I'm glad there's validation that prevents you from continuing if you don't click checkboxes though. Was curious about that. Will add your points to my comment.
There is a message saying that you need to select at least one option, however after that, I had to close the browser tab and start over because there was nothing there after the message. Much easier to do it correctly from the start.