First, the GOP nomination process produced (and may have been designed to produce) a candidate that provided little appeal or opposition to Obama’s stated domestic aims and ran one of the most feeble campaigns ever.
Second, too many suffering from “Bush fatigue” saw in the empty vessel that was Obama’s public image whatever they wanted to see. Those who took the time to look beyond the mainstream media that eagerly flacked for Obama saw the warning signs. Sadly, too few bothered.
I agree with your two issues, but again this did not happen overnight! This was a culmination of multiple errors on the part of the Repugs (bad fiscal policy on the domestic front, Bush’s refusal to defend himself from BLATANT lies and distortions, bad nomination process, feeble campaign, prevalent RINO feelings throughout, etc...) and the Dems pushing (false “empty vessel” status on Obama, McCain = Bush = Conservative = Bad, their “Socialism is next to Godly” message, Repugs want to remove your “right” to their money, etc...).
This was not a one issue item; it was the straw that broke the camel’s back!!