What is the test for a court to appoint counsel in a personal injury case?

The court's discretion to appoint counsel may be exercised only under "exceptional circumstances." Terrell v. Brewer, 935 F.2d 1015, 1017 (9th Cir. 1991). "A finding of exceptional circumstances requires an evaluation of both the likelihood of success on the merits and the ability of the petitioner to articulate his claims pro se in light of the complexity of the legal issues involved. Neither of these factors is dispositive and both must be viewed together before reaching a decision." Id. (citations and internal quotation marks omitted).