I'm not sure I buy this. There's many surveys that show that there are many issues that voters across both parties agree on. It's simply that catering to some m

I'm not sure I buy this. There's many surveys that show that there are many issues that voters across both parties agree on. It's simply that catering to some more extreme elements of the party, so-called single issue voters can be more important because the parties don't loose votes over the issue from more moderate voters.