I think this question is kinda different from what happened in congress, which is why I'm guessing you're asking it. The bill in congress wasn't about stem cells research, it was about the government funding the research for it. I personally do not want another dime of my money going to the government for this. I'm also against embryonic stem cell research.
Once again Ron Paul, the only Libertarian in the Congress, opposses federal funds for things that the government has no business being involved in. The question in the Congress isn't about stem cell research yes or no, again it's about tax dollars being used for it.