Old School Washington Insider?
Aggressive Attack Dog?
Probably all of the above. But what about his positions on issues?
He is a moderate on abortion. NARAL says he's only 35% pro-choice on voting but National Right to Life Coalition says he's 0% pro-life. He's a Catholic who says he personally against abortion but doesn't want to impose anyone's views on anyone. So he's voted against public funding for abortions and against partial birth abortions but he's also voted against banning abortions on military bases and against requiring parental consent for abortions. Biden also says that he believes the constitution includes a "right to privacy" which is the underlying logic of Roe v. Wade.
One of his better one liners is "Nobody asks if you're gay in a foxhole." He's rated as having a 78% pro-gay rights voting record by HRC and 100% on affirmative action by NAACP. But only 60% on civil liberties by ACLU.
He's rated as 42% pro-trade by CATO but his key votes indicate he's from the pro-trade wing of the Democratic party. In particular he's advocated expanding free trade to the Andean countries, Vietnam and China. But he's opposed CAFTA in Central America. When Clinton was President, in 1997, he favored "fast track" authority. But since Bush has been President, he's opposed it. So shock of shocks, he trusts Democratic presidents more than Republican ones.
Unions love this guy. AFL-CIO rate him at 100% pro-Union.
He's got a 100% pro-separation of church and state voting record.