Just a handful of seats separate Democratic from Republican control of the House — a body that hasn't been this balanced since 1954.
An incumbent loss here, a come-from-behind victory there, and GOP House Speaker Dennis Hastert could trade offices with House Democratic Leader Richard Gephardt in January. But no one should be packing boxes yet.
History gives an edge to the opposition during elections where the nation isn't picking a president. In 32 of 34 midterm elections since the Civil War, the president's party has lost seats. But only once this century, in 1994, has Congress changed control in a midterm election and that's when Republicans assumed the majority.
Most experts find only about 35 of the 435 House races competitive. We've tried to narrow this down to five races that could sway the House's control. Here then is the ABCNEWS.com Five-Pack.
No. 1 — South Dakota At Large
In her House race with Gov. Bill Janklow, 31-year-old Democratic newcomer Stephanie Herseth is fast-becoming the candidate who could. The contest itself has been exceedingly cordial. The one and only negative television ad, produced the National Republican Congressional Committee, was pulled at Janklow's request.
But political experts believe Janklow may have underestimated his young challenger; and this could prove a costly mistake in a state that has no trouble electing young competitors over more experienced candidates. Years ago, South Dakota voters narrowly first elected a 31-year old Tom Daschle to the House by only 139 votes. Now Daschle is Senate majority leader.
Most state polls show Janklow with a slim, if not statistically insignificant, lead. But Democrats hope Herseth's positive approach and momentum will sway undecided/independent voters, putting her over the edge and into the House.
No. 2 — Indiana's Second District
The South Bend Tribune has called the race between Republican Chris Chocola and Democrat Jill Long Thompson, "...one of the most expensive, most contentious and most important races in the nation." The mudslinging has included everything from bad checks to questioning patriotism.
High-profile supporters — including President Bush for Chocola, and former Indiana Sen. Birch Bayh on behalf of Thompson — blanketed the area, elevating the stakes but not necessarily the tone of the election.
In the end, this one may come down to turnout and gender. More women support Thompson, men favor Chocola. But both groups agree this election has gotten out of hand. Now it's time for both sides to get out the vote.
No. 3 — Pennsylvania's 17th District
Something strange is happening in Pennsylvania: an incumbent is losing. But that's only a technicality as redistricting has forced four incumbent vs. incumbent battles and one of them is between Democratic Rep. Tim Holden and Republican Rep. George Gekas.
Contrary to Republican expectations, Gekas' age and experience has been working against him. The 72-year-old, 10-term congressman hasn't faced much competition in the past, running unopposed in most of his races. But more importantly, in Pennsylvania's new 17th, Gekas faces Holden, a Blue Dog Democrat, who favors fiscally conservative policies, supports campaign finance, gun rights and anti-abortion measures.
Soft money from both national parties and several interest groups has poured into the state. Holden leads coming down the homestretch but Gekas should not be counted out.
No. 4 — Iowa's Second District