Abstract: In county-level governance, whole-process people’ s democracy faces a spatiotemporal embedding imbalance between institutional supply and governance demands, this paper confronted the “formalization–fragmentation–placeholding” maladies afflicting county-level democracy by dissecting Yunnan’ s Jinning District “Home Visits Connecting Hearts + Station Empowerment” model. It exposed the glaring supply–efficiency gap between the lofty demands of whole-process people’ s democracy and the perfunctory reality: representatives reduced to ceremonial votes, public-opinion channels clogged, oversight mechanisms hollowed out. To pierce this deadlock, this paper critically adapted and deeply localized Kingdon’ s Multiple Streams Theory, forging a surgical analytical framework that integrates the Problem Stream–Policy Stream–Political Stream with a Procedure Chain and Flexible Empowerment. Within this frame, this paper traced the textual evolution of Jinning’ s “Three-Must-Visit” rule, the logic behind professional representative workstations, and the core of its standardized home-visit protocol. This study deployed triangular cross-validation—quantitative metrics, qualitative deep-dives, and tangible field evidence—to present, with clinical precision, the true efficacy of this institutional innovation. Finally, it decoded the democratic leap in western counties: under severe spatiotemporal compression, the dual engines of technological enablement and cultural translation yield a refined balance of differential empowerment. Building on these insights, it advocated establishing county-level “Policy Laboratories” and modularizing institutional outputs as breakthrough pathways for replicable, full-process democratic governance.