Did you see this little disclaimer at the LA Times link?
* Results in the shaded areas fall within the poll’s margin of error, meaning the difference between the candidates could be the result of chance.
So the poll Trump does best in, he is still within the margin of error.
He is running against the absolute worst person ever to fly her broom over the White House threshold. An old woman who can't even finish a 2 minute speech without a coughing fit, unless she is drugged up. Someone who could fill the library of congress with all her ethics charges and legal violations. Someone who can't even name her own accomplishments.
And the best Trump can do is stay within the margin of error.
This is nothing to cheer about if you are a fan.