How i personally think each doctor would vote in the UK General election:
One: doesn't understand earth voting rules, puts gallifreyan in the box instead of a cross. Ballot spoiled.
Two: tried to vote for count binface but still doesn't know the voting rules. Put a smiley face instead of a cross. Ballot spoiled
Three: voted for whatever Jo said was good but a week before the election he noticed a typo on a candidates leaflet and decided to helpfully leave a note about it on his ballot paper. Ballot spoiled
Four: deliberately spoiled his ballet just for the fun of it
Five: got lost on the way to the polling station, somehow ended up at Heathrow Airport
Six: deliberately spoils his ballot as an act of defiance
Seven: told everyone he didn't vote because it all doesn't matter in the grand scheme of things. Actually voted for count binface again. And for the first time ever, didn't spoil the ballot
Eight: Almost forgot there was an election but luckily remembered at the last second! He showed up to the polling station at 9.55pm and they wouldn't let him in because he couldn't remember his name or address
Nine: planned to vote for whatever rose said was good but just ends up writing swear words on the ballot paper. Ballot spoiled
Ten: gets kicked out of the polling station for raving on about how Harold Saxon isn't a real person and we're all dooming ourselves
Eleven: decided to rank the candidates based on hairstyles instead of voting. Ballot spoiled
Twelve: votes for someone but then later changes his mind and tries to go back in time to change his vote but by doing so creates a huge paradox. By fixing the paradox he somehow undid the fact he had voted at all and now he just cant be bothered doing it again
Thirteen: pretends she doesn't know how to vote and spoils it but in reality she just thinks all the candidates kinda suck
Fourteen: votes for whoever Rose endorses. Says he is doing it on her behalf since she isn't old enough to vote herself
Fifteen: coincidentally never on earth during an election. He thinks the tardis is keeping him away from any and all elections bc she's personally sick of them