1: Whom are you voting to?

Please have a look on the following sentences:

1: Whom are you voting to?

2: Whom are you voting for?

3: Whom are you waiting?

Questions:

1: Are all the sentences correct?

2: Is ''Whom'' used as an object?

("Please have a look at the following sentences...")

All the best,

MrP

Look at - is a phrasal verb meaning to direct one's attention to something. i.e.  She is looking at you. 

Look on-  has a  competely different meaning and it was incorrect in the context of your sentences.