How common *is* a lack of punctuality in politicians, these days?

I mean, I know that Barack Obama is notoriously bad at showing up on time. And now apparently so is Hillary Clinton.  But are Republican politicians any better, on the average – or am I just more likely to notice a politician being late when he or she is on the Other Side? It’s a serious question. I mean, I am a partisan hack.

Still, people should be on time.