I do not recall seeing him or Darth Cheney at the repug convention. Conservatives don't have "bad ideas", they have "failed leaders". This is basically endemic to the fundamentalist outlook on life. The "goal", "plan" or, "values" are "perfect" and "ideal", however we as people (read "hopeless sinners" can never truly live up to them. Some of us fall far shorter than others.
It is not that Bush* was a "conservative" who used "conservative ideas" to drive the country off a cliff. It is that he was a "failed leader" who did not live up to their "goodness" and "true americanism".
Liberals by nature do not put ideas on a pedestal and are therefore accused of having no "values". This is not true. Our values are not policies. If the work toward equality requires tax cuts, we would support them, if it requires tax increases, we would support them. Over time a great number of choices will arise and the search for social justice will always require an open mind. Having an open mind is actually a value. Being able to admit that one approach did not work and then stepping out to try another is how things can work.
Trying to shoehorn American culture into 250 year old ideas that never really worked because "the founders" wrote them is a prescription for failure every time.
Note how much they treat these documents as they do the Bible, it is an important observation and says alot.