Did you, yourself, not claim a "trend" at the first dip in Trump's numbers?
Post position at this point is virtually meaningless it is only trends that count. The mindless crowing that we get from some Trump supporters that he is on top (generally offered with a gratuitous personal slap) is about as relevant as when Bush was on top, then Walker. But if a candidate has no philosophical foundation, soaring negatives, incoherent positions, it is necessary to quote the polls because that's all he has.
It is one thing for Walker to lose ground in the polls, his biography and his record give him the chance to come back. If Marco Rubio loses ground, his appeal on the stump can let him come back. But once the main prop of Trump's campaign softens, once the momentum slows