For a normal Sourcemod vote you can do:
bind <button> slot6
That would select the 6th option in a vote menu. You could basically bind that to your mouse2 button and press that when a vote comes up. Or you can bind it to all of your movement keys so you will press it automatically while jumping. Like:
bind W "+mfwd; slot6"
bind A "+mleft; slot6"
bind D "+mright; slot6"
etc etc
I couldn't test this on Tempus yet because the servers are full all the time.
Nevermind, works on Tempus too.