I won't question the fact that they are very good at it and indeed, a lot of elected officials forget their promises immediately after that.

And yes, voters cold-calling senators is an incredibly unreliable way to know who cares about what. I am astounded that it is still that efficient. I guess many candidates haven't figured yet that a lot of people can lie.

Personally I wouldn't say "I will vote for you if you do X or Y". Given the current political climate, I would present myself as a republican voter who has doubts "and really, this net neutrality things really makes it hard for me. I don't really see why I should go vote for either side now."

They wont believe someone who pretends they can switch on a single issue but their current fear is that their base won't come on election day.