If conservatives have learned nothing since 1992, the answer is "yes."
Many Republican voters stayed home in 1992 because GHW Bush failed their purity test by breaking his "no new taxes" pledge. If conservatives refuse to vote for GW Bush because he fails a similar test (assault weapons ban, amnesty, whatever) then they will only have themselves to blame for President Hillary or President Dickie G.
If Bush loses in 2004 because conservatives don't believe he is "conservative" enough to earn thier precious vote, they better not rear their holier-than-thou heads around here. The mother of all flames will be coming from this direction and I will probably end up being banned.
I have no patience with the purists who would rather usher in the imperial reign of Her Royal Hillaryness than hold their nose and vote for a Republican less "pure" than they.
As you slide down that slippery slope, at what point to you stop supporting the 'less pure' candidates that are doing the very things that you fight against? You know, things like tax increases, expansion of the Federal Education Dept, Federal spending, and gun bans.
Where do you draw the line?