If he or she makes them well then it is an orator.
a polictian
An orator or eloquent speaker.
He has a special person to write his speeches.
A person that makes candles is called a chandler.
the person who makes spelling mistakes is called cacographer.
The person that makes and sells sweets is called a confectioner.
A person who makes things out of stone is called a stonemason or a stone carver.
A person who makes saddles would be called a Saddler.
The oppisite of what makes a speech good :)
A person who makes mirrors is called a mirror maker or a glassworker specialized in mirror production.
A person who makes whiskey is called a distiller.
A person who makes idols from stone is called a stone sculptor or a stone carver.