Generally speaking, Republicans aren't actually more disciplined or organized than Democrats, and vice versa -- whether your side is "good enough" is usually a function of whether you're winning or losing. That said, I'll make an exception for messaging; when Republicans lose elections, you really don't hear them complain about it for weeks afterward:
In interviews after the marathon three hour meeting, several senators and senior aides told POLITICO that Nelson was just one of several senators to express anger at White House missteps – and air deep concerns about their own political fates if Obama and the Democratic Party leadership can’t turn things around by 2012. [...]
