The past 3 months Donald Trump’s unfavorables have gone almost straight up and his favorables have gone down, with no one left who is undecided.
Everyone has a strong opinion about Donald Trump and 70% of those opinions are bad.
This is contradicted even by the BS Huffington Post average you posted which shows it pretty steady going back almost a year, before Trump swept the South which Cruz was supposed to win, but didn't, because Southerners don't like slimy, mutant car salesmen with high favorability numbers LOL.
Ted Cruz
Unfavorable 59%
Favorable 26%
Undecided 14%
The more Americans get to know him, the more they dislike him. Two more weeks and Cruz’s numbers will be the same as TRump’s.