-- by Congresspedia assistant editor Avelino Maestas

For full information on a state's candidates, click its name at any point below.

Our wrap-up of Tuesday's primary elections is pretty hefty, so we've split it into three parts; you can find results from Delaware [3], New Hampshire [4], Rhode Island [5] and Vermont [6] in this post. Remember, we have a full list of candidates after the break, including job info for all the challengers. You can find midwestern candidates at the Minnesota [7] and Wisconsin [8] portals and at the midwestern wrap up [9], and mid-Atlantic candidates at the District of Columbia [10] and New York [11] portals and at the mid-Atlantic wrap up [12].

Delaware [3]

Sen. Joe Biden was unopposed in the Democratic primary. He's expected to easily be re-elected this November over challenger Christine O'Donnell [13]. However, should he be elected Vice-President, an interim replacement would be named by the governor until a special election is held in 2010.

In the At Large House race, Karen Hartley-Nagle [14] beat out two other candidates for the Democratic nomination to take on incumbent Rep. Mike Castle [15] (R). Castle is favored for the general election.

New Hampshire [4]

The general election this year will feature a couple of rematches. In the 1st congressional district, Rep. Carol Shea-Porter [16] (D) will face former Rep. Jeb Bradley [17] (R), whom she defeated in 2006. The Senate race is also a rematch, between 2002 candidates Sen. John Sununu [18] (R) and former Gov. Jeanne Shaheen [19] (D). Sununu narrowly won six years ago, but Shaheen may have an edge this year.

In CD-02, freshman Rep. Paul Hodes [20] (D) will face Jennifer Horn [21] in November.

Rhode Island [5]

Republican voters nominated Robert Tingle [22] to challenge Sen. Jack Reed [23] (D), who is favored to win come November. The state's incumbent House members, Reps. Patrick Kennedy [24] (D) and James Langevin [25] (D) were unopposed in the primary. Republican nominee Jon Scott [26] will face Kennedy in the 1st district, while in CD-02 Langevin will be running against Mark S. Zaccaria [27] (R).

Vermont [6]

Rep. Peter Welch [28] (D) is unopposed by major parties, but will face several other candidates.

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Here are the victors of Delaware [3]'s primaries:

• Sen. Joe Biden [31] (D) is being challenged by Republican Christine O'Donnell [13], a marketing and media consultant.
• In the At-Large district, Republican incumbent Rep. Mike Castle [15] is running against Karen Hartley-Nagle [14], executive director of the Nagle Foundation.

Here are the victors of New Hampshire [4]'s primaries:

• Republican Sen. John Sununu [18].
• In the 1st district, incumbent Rep. Carol Shea-Porter [16] (D).
• In the 2nd district, Democratic incumbent Rep. Paul Hodes [20].

Here are the victors of Rhode Island [5]'s primaries:

• Sen. Jack Reed [23], a Democrat, will face Robert Tingle [22] (R), who works in the casino business.
• In the 1st district, Democratic incumbent Rep. Patrick Kennedy [24] is being challenged by Jon Scott [26], a Republican who works for a contracted group home provider.
• In the 2nd district, incumbent Rep. James R. Langevin [32] (D) is up against Republican nominee Mark S. Zaccaria [27], a marketing consultant.

Here are the victors of Vermont [6]'s primaries:

• In the 1st district, incumbent Rep. Peter Welch [28] (D) faces no major-party opposition.