Under the heading of deliberation, Aristotle explains that people are drawn to pleasure and are likely to do (and vote for) anything that brings pleasure. One can build enthmemes out of the list below and one can dilate on any of them to give your audience a brief respite from more tedious topics or to improve their mood. These topics can also be used as a way of condemning a person's actions, to show that they did the wrong they are accused of because it felt good: pleasure is one of the souces of wrong doing, and anyone who would hurt someone because it felt good is a bad person.
Movement into a natural state - so action is more pleasurable the closer it is to nature [helotropic plants long to face the sun, wilt when denied the sun]
Habit- because habit are actions that become almost natural
Action that is not mandated
Ease and freedom from toil, carefreeness, games and recreation, sleep- because they are not necessary (really? Sleep is pretty necessary or is he talking about like naps?)
Anything longed for, either irrational or logical
Present in perception, past in remembering, future in hoping- memories are pleasurable
Not having evil
Things hoped for
Things that give delight when present -- both in hoping and in possessing
Anger
Pleasure follows most desires
Love, mourning, lamentation
Revenge
Winning -- and therefore games and sports and lawsuits and debates
Honor and reputation and being admired
Friendship -- to be fond of something is pleasurable as is to be liked
Flattery
Change that returns one to the way things were, a positive regress
Things that are unexpected or novel
To learn, to achieve
To be admired or desired
Benefit others and be well treated
Sudden change and narrow escapes (like drama?)
Likeness
Flatterers, lovers, honors, children
Supplying things that are lacking
Being a leader
Criticizing neighbors
Seeming to be wise [appearance is everything in rhetorical situations. If you don't seem wise no one will think you wise.]