State habeas denial was contrary to and an unreasonable application of the federal law governing ineffective assistance of counsel claims as to mitigation and aggravating factors, since it considered whether the specific court that had heard the case would have been prejudiced, rather than a neutral and objective court considered abstractly, and also did not weigh the cumulative effect of the mitigation that had been omitted.
http://cdn.ca9.uscourts.gov/datastore/opinions/2018/07/11/15-99011.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.