That Democrats have a continuing high trust is to be expected - they are hearing what they want to hear from the LSM.
When Bush told the public he was mistaken about Saddam’s WMD, it threw the non-Marxist independents’ trust of the GOP for a loop. That was much bigger than the Bushies (C. Rice who demanded he say that and stupid Rove who went along with it) could have imagined. Carrying out a war accidently... That will never be forgiven nor fogotten by a generation of voters.
Man, at least some independents are waking up to the other danger - Marxists. But they will always distrust Republicans like they distrust Marxists now. Americans feel burned by both parties. If what Bush said is true, they are right.