Dead Man Flying,
Gore cast the deciding vote in the Senate which helped pass legislation that was offensive to many conservative voters in the South and West.
It's only fitting that many conservatives have become Republicans. Gun-owners have long memories and they never forgot or forgave those votes.
This legislation was pushed by Clinton and Gore gave it his whole-hearted support. These votes cost the Democrats in the Congressional elections of 1994 and it hurt Gore in 2000. If you require evidence look at the election results map. Bush carried out an almost clean sweep of the South, Southwest, West, and Heartland states, which are traditionally conservative strongholds. Being associated with the Clinton campaigne-finance scandals didn't help him in those regions either. Had Gore carried the election in just one more of those states the vote in Florida might not have mattered. Instead, he lost nearly all of them, including his home state.
He and his campaigne staff may have adopted a policy of distancing themselves from Clinton in June of 2000, but it was STILL too late.
Regards, Shuckins