The more things change, the more they stay the same.
Go look up the Pew sociometric data from late 1999 on voting groups and see if you can pull out the data on RKBA opinion.
Or try the archives of Newsweek and pull out the article they wrote (and I saved somewhere but can't find now) at the time about the Pew data.
The secret to the problem is that Bush represents business-class individuals, who are corner-office types, entrepreneurs, execs, and a few others. They dislike private gun ownership in principle and in practice, but they're quieter about it than the ideologized snores who people the activist ranks of the Rat Party.
There is another group of yuppified ex-countercultural types that are mostly knowledge workers and some supervisory types, professionals, and so on, who are fairly liberal and don't like guns either. Neither do the smallest political type, older women (about 6% of the electorate), who positively dread firearms -- they're mostly a bundle of assorted anxieties and fears, and this is one of them.
I'm overgeneralizing horribly, but my basic point is that on RKBA, the Bush family cannot be counted on because their core values are Old Money and Wall Street (Hamiltonian) Republicanism, which has no room IMHO for a Militia, firearms, or an armed -- or even educated -- public.