Well, according to the US supreme court, money is speech - so more money more voice. As a concrete example, trump backed his own campaign to the tune of ~$66mil. Without it, I'm not sure he would have gotten as far as he did.
(I'm not endorsing this, I'm just saying these are the rules of the game that's been set up)
And to answer your second question - not quick enough for the public to act on it.
(I'm not endorsing this, I'm just saying these are the rules of the game that's been set up)
And to answer your second question - not quick enough for the public to act on it.