Question

Do you say "thank you" at the end of the campaign speech?

Answer 1

Of course you do its a sign of respect lol

Answer 2

_Award brainliest if helped
You normally end the speech with your motto/slogan. then thank you . 
Or thank them for listening/their attention. 
e.g. your slogan is we will be the best :   "We will be the best. Thank you"