The 2004 electoral cycle got me hooked on polling. The microtargeting over NASCAR dads and Walmart moms and the impact on the results, as well as debates over weighing of political parties in samples and the importance of cell phone, landline, and internet-only polls reverberates to this day.
At the time I followed Electoral Vote, and Pollster (now part of HuffPo). The 2008 cycle had me following Nate Silver at 538 (and now at the NYTimes). TPM’s poll tracker is pretty good, too. Of course, if reality isn’t your thing, you could also read UnskewedPolls. Inspired by this post at LGM.