The silly season is well and truly underway. At this point, in late February, it looks like former President Donald Trump has the Republican nomination sewn up, barring some catastrophe; and the Democrats, while fretting some about Joe Biden's visible decline, don't seem to be making any move to dump him - more on that after we take a look at some 2024 swing-state polls. Poll results are taken from the RealClearPolling compilation, while the 2020 results are from CNN's 2020 recap.Also: In this analysis, since I'm looking at trends more than the actual results, I'm not getting into trying...