Even the originally published PR formula includes a damping factor (0.85 was suggested in the paper). Otherwise, as the calculation is iterated, the PR values would take off to infinity rather than converge.
The key is that a PR "vote" is not actually defined as a one-time event, "slice up the available PR and add it to the target page". PR is defined as an iterative calculation -- something repeated around the webgraph many times until value converge. So even theoretically, "all" the PageRank never flows through a page or a redirect.