Don't merely vote; vote knowledgeably and informed.

I came across this website watching PBS. It's a comprehensive list of issues, legislation, elected officials and candidates from across the US.

Project Vote Smart

In their own words:

Thousands of candidates and elected officials. Who works for you? Who is seeking your vote? Project Vote Smart, a citizen's organization, has developed a Voter's Self-Defense system to provide you with the necessary tools to self-govern effectively: abundant, accurate, unbiased and relevant information. As a national library of factual information, Project Vote Smart covers your candidates and elected officials in five basic categories: biographical information, issue positions, voting records, campaign finances and interest group ratings.