As an Unaffiliated voter, or soon to be former Republican voter, you ought to know that you have a home in the Democratic Party. The Democratic Party welcomes diversity, not just in income, race, or religion but in ideology. While we recognize that there are many different paths to the shared goal of prosperity, we tend to unify around a set of core principles such as: equality under the law; respect for American institutions; and the idea that government has a positive role to play in ensuring that our children receive a world-class education, that we are protected from unscrupulous big business, and that necessary infrastructure investments are made that will allow us to grow the economy, just to name a few.  
In short, the Democratic Party is the big-tent party that supports good government.