Before anyone tries to disqualify the question or divide it into 'neocon vs. conservatives', remember that Bush had like 90% or higher among conservatives, and had Fox News pulling for him. The same Fox News then as now, minus a few sexual harassers.
Lets also explain the Democratic support for the war. There was some Democratic support, which was gained by feeding them cooked intel... and only from centrists and center-right moderates. Remember, Ann Coulter famously said that Hillary Clinton was more conservative than McCain.
The liberal base was always vehemently against the Iraq war. We were called unpatriotic and worse, to the point of having to rename French Fries as 'Freedom Fries'.
Which side was right, all these years later?