“Broken glass” as in break glass in case of emergency? Honestly, I expect that Dems will keep picking up votes as most of the population is either brainwashed or hopelessly dependent on them. And that includes many who say they are conservatives.
"Broken glass" as in willing to crawl across broken glass to vote against the Democrats/for the Republicans. Another strong dose of someone Dole- or McCain-like could cure the second half of those.
"Broken glass" conservatives are those who would crawl over broken glass to vote. I think we do have an emergency though, and broken glass is also the answer to the question about the glass being half empty or half full.
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)