I will try to rephrase and expand onJohn Mace’s arguments from earlier in the thread, because this is really the point addressing the OP.
1) I have the right under the First Amendment to build a print shop and print up as many posters as I can afford saying "Vote for Candidate X!"
This is Amendment I, pure and simple.
2) If I don’t wish to build a print shop, but I make the acquaintance of someone who has one, I can pay them to print up as many posters as I can afford saying "Vote for Candidate X!"
This is how one would expect it to work most of the time in the real world.
3) A person may contact me and say, "I hear you want people to vote for Candidate X. I know a lot of other people like that, plus I know print shops we can use, as well as newspapers, radio and TV stations, and webmasters who are all looking for ad revenue. Give me the money you were going to use on your own, I’ll pool it with the money from these other people, and we’ll get the word out much more effectively."
From what I’ve read of your posts, you seem have no problem with this. What you seem to have a problem with is when we get to:
4) Candidate X or a representative of their campaign contacts me and says, "I hear you want people to vote for Candidate X. I know a lot of other people like that, plus I know print shops we can use, as well as newspapers, radio and TV stations, and webmasters who are all looking for ad revenue. Give me the money you were going to use on your own, I’ll pool it with the money from these other people, and we’ll get the word out much more effectively."
So your thrust seems to be, if we were to ban contributions in situation #3, it would be a violation of First Amendment rights to free speech, but banning them under situation #4 would not. To which we must reply, “On what grounds?” Why should Candidate X be denied the right to make the same proposition (directly or through an agent) as the the person in situation #3 just because they are Candidate X?
Your claim that the Candidate X campaign has no idea what speech I intend by my contribution is missing the point. The assumption is that, by my contribution, I simply wish to support the speech being put out by the campaign, rather than duplicating their efforts on my own, and in that case, (ready?):
The money I contribute acts in place of any speech I might have generated myself. Therefore, the money is equivalent to speech.