My big problem with this poll, and with SurveyUSA before it, is that it only includes three candidates. The Clear Path Strategies poll showed the other three Republicans taking 17% of the 39% Republican vote. When you don't include them you don't get the full idea of who people will choose as an alternative to Tim Donnelly. "Someone else" isn't a good alternative and scores very low here.
If there were only three candidates, Kashkari could be confident. But there aren't and it's possible that he's actually trailing Donnelly. So don't take this as a clear indicator of how Kashkari is doing.