I would like to know if there is a single site for each party where we can address the senate as a whole within the party?

I am sure most of us are a bit tired and rundown from this exercise we have taken.

I really would like to address them as a whole and state my opinion and maybe others might want to too.

I know the last time in June, I wrote directly to the national party sites, but this time I can't find a contact just for the party, only for the individual senators.

Thanks for helping.