State v. Warren, 430 P.3d 1036

Defendant (Warren) was indicted on seven counts spanning ~11 months: multiple counts of unlawfully obtaining public assistance/food stamps, first-degree theft, and unsworn falsification; the indictment did not state the statutory basis for joining counts under ORS 132.560.
Defendant demurred under ORS 135.630(2) arguing the indictment failed to allege the basis for joinder; the trial court disallowed the demurrer and the case went to jury trial.
At trial the State presented evidence tying the counts to benefit applications, residence/address statements, and failure to report income; jury convicted on five counts and acquitted on two.
On appeal the Court of Appeals applied Poston I (holding indictments joining multiple offenses must allege the basis for joinder) but found any defect harmless because the evidence admitted at the joint trial would have been admissible in separate trials.
The Oregon Supreme Court granted review to decide (1) whether an indictment joining multiple offenses must allege the basis for joinder, and (2) whether erroneous disallowance of such a demurrer is subject to harmless-error review.

Issue	State's Argument	Warren's Argument	Held
Whether an indictment that charges more than one offense must allege the basis for joinder under ORS 132.560	The statute's text does not require alleging the relational basis; joinder can be litigated later	The joinder and demurrer statutes + case law require the indictment to show on its face the basis for joinder	Yes: consistent with ORS 132.560 read with ORS 135.630 and long-standing case law, an indictment charging multiple offenses must allege the basis for joinder
Whether erroneous disallowance of a demurrer for failure to allege joinder requires reversal (i.e., whether harmless-error review applies)	Appellate harmless-error principles apply; former ORS 138.230 and Article VII, §3 permit affirmance if error did not affect substantial rights	Disallowance of demurrer is dispositive and not subject to harmless-error treatment; it prejudiced defendant's substantial rights	Harmless-error framework applies; even assuming the indictment erred, defendant failed to show prejudice to substantial rights, so affirmance is proper

State v. Poston, 277 Or. App. 137 (Court of Appeals) (held indictment joining offenses must allege basis for joinder; set out harmless-error inquiry focusing on whether evidence admitted because of joinder affected verdict)
State v. Ferrell, 315 Or. 213 (1992) (defective supplemental allegations in indictments do not necessarily vitiate convictions on underlying offenses; relief limited to resentencing where convictions stand)
State v. Fitzgerald, 267 Or. 266 (1973) (joining charges must reflect actual relatedness; trial court must order election or severance if evidence shows charges are not part of same transaction)
State v. Huennekens, 245 Or. 150 (1966) (indictment alleging offenses "part of same act or transaction" good against demurrer where such a relationship is plausible)
State v. Clark, 46 Or. 140 (1905) (historic recognition that pleadings must show basis for treating multiple acts as one offense when required)
State v. Tracy, 246 Or. 349 (1967) (applied the requirement that joinder be supported by allegations and by possibility under the facts)