The list of Democrats who have publicly suggested they might run is indeed skimpy. But it’s misleading to compare the depth of the two parties simply by counting the number of self-declared possible candidates. Every Republican who ever looked in the mirror and saw a president is hinting at a run, hoping to generate press, test the reaction and even begin to build momentum. For GOP-ers, there’s no downside to being talked about as a potential candidate. But not many A-list Democrats are mounting the same kind of PR campaign.