Thumm v. State, 447 P.3d 853

Background

In 2009 a jury convicted Vance E. Thumm of aggravated battery (or aiding/abetting) and as a persistent violator; he was sentenced to a unified 40‑year term (15 determinate).
Thumm was represented successively by a public defender (Wollen), retained counsel (Bond) shortly before trial, and conflict counsel at sentencing/after trial; he appealed and lost.
In 2013 Thumm filed a post‑conviction petition alleging ineffective assistance of trial and appellate counsel, a Brady (exculpatory evidence) claim concerning a fingerprint report, multiple instances of prosecutorial misconduct, and cumulative error.
The State moved for summary disposition; the district court dismissed the petition. Thumm appealed the summary dismissal.
The Idaho Supreme Court reviewed the petition under the Strickland framework and summary‑judgment standards for post‑conviction relief and affirmed dismissal in all respects.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Ineffective assistance for failing to oppose joinder/severance (Bruton concerns)	Counsel should have opposed joinder or moved to sever because co‑defendant Davis’s statements implicated Thumm.	Joinder was proper; Davis’s statements were admissible (excited utterances/other exceptions) and Bruton did not bar non‑testimonial statements.	No deficient performance or prejudice; joinder/severance claim fails.
Ineffective assistance — various trial counsel errors (discovery, suppression, impeachment, Abel/gang impeachment)	Bond/Wollen failed to provide discovery, timely suppress lineups, impeach key witnesses, or challenge gang‑membership impeachment limits, prejudicing defense.	Counsel made strategic choices; some acts were timely raised; suppressed fingerprint evidence was excluded; plaintiff fails to show prejudice under Strickland.	Most claims are tactical or lack prejudice; summary dismissal affirmed.
Brady — delayed disclosure of fingerprint report	Late disclosure deprived defense of a scientific/exculpatory tool tying Thumm to bottles used as weapons and was material.	Report was disclosed before trial; defense knew of it and trial court excluded its use; no suppression or material prejudice.	No Brady violation: evidence not suppressed and no reasonable probability of different outcome.
Prosecutorial misconduct and cumulative error	Prosecutor made multiple improper arguments and referenced physical evidence inconsistent with the excluded fingerprint report; cumulative effect warrants relief.	Many alleged instances could have been raised on direct appeal and are forfeited; those not raised lack record support or are harmless; appellate counsel’s choices were tactical.	Claims waived or meritless; even assumed error would be harmless; no cumulative error.

Key Cases Cited

Strickland v. Washington, 466 U.S. 668 (ineffective assistance two‑prong test)
Bruton v. United States, 391 U.S. 123 (co‑defendant statements and confrontation concerns)
Crawford v. Washington, 541 U.S. 36 (testimonial statements and Confrontation Clause)
United States v. Bagley, 473 U.S. 667 (prosecution’s duty to disclose favorable evidence)
Brady v. Maryland, 373 U.S. 83 (suppression of favorable evidence violates due process)
United States v. Abel, 469 U.S. 45 (common organization membership admissible to show bias)
United States v. Ingraldi, 793 F.2d 408 (First Circuit standard for delayed Brady disclosure)
State v. Abdullah, 158 Idaho 386 (post‑conviction standards and prosecutorial duty in Idaho)
State v. Dunlap, 159 Idaho 280 (appellate counsel omission and prejudice analysis)