Polling is a proven statistical science, and as a general statement polls tend to be accurate well within the margin of error. Yes, of course there are exceptions so don't pepper me with examples of inaccurate polls. Given the number of credible organizations polling this race, and the general agreement of those polls, yes, I have faith in most of the polls avaiable (LA Times is of course excluded, note I said 'credible' organizations).
People, as a rule, tend to believe polls with which they agree, and tend to dismiss or attack polls with which they disagree. The fact remains that a properly conducted poll, and polling body of 1000 is actually significant, is seldom wrong. When you have 6 major polls within a 2 week period all agreeing within the margin of error, to discount such polls is to be in denial of reality.