In 2010, the Supreme Court of the United States, led by chief justice John Roberts, ruled 5-4 that the First Amendment prohibited the government from restricting independent political expenditures by corporations and unions.
Additionally, this led to Super PACs (Super Political Action Committees), which the D.C. Circuit held 9–0 that in light of Citizens United, such restrictions on the sources and size of contributions could not apply to an organization that made only independent expenditures in support of or opposition to a candidate, but not contributions to a candidates campaign.
In laymen's terms: if you have millions of dollars to donate, and want to influence a democratic election, then you can.
When the median household income in the United States is around $50K (circa 2006 stats), how do us normal folk have the chance to influence an election? Is this really democracy?