Of course elected officials can vote how they choose and then they answer to the electorate.
And that electorate that they answer to is who they officially represent, is it not?. And who is their electorate?
It's the people, not the States. The States haven't elected any representation since the 17th Amendment finished going to effect in 1919. Sure, some of the States' interests align with the people's, but that is not always the case. The Senate is supposed to be the more deliberative body, tempering the more erratic whims of the House, which represents the People.
As a last resort you can explain how two senators represent someone’s or somethings other than the state. I would be interested in your explanation since it is so unique.
See above. And it's not unique at all.
Do our Senators represent the people’s wishes or their own agenda? - Fun comments here. Note 'or their State' isn't even in the title..
Why the 17th Amendment is Bad and Should be Repealed Why Should We Repeal the 17th Amendment?