Five months before Election Day, Republicans are poised to retain control of the House of Representatives and inch close - and perhaps win the majority - in the Senate.
The outlook is driven by local factors rather than any kind of wave for or against either major political party. Indeed, the lack of a national tide could help the Republicans hold the House, where they're expected to lose seats but not enough to cost them the majority.
Top analysts who chart congressional campaigns now see Republicans losing as many as 15 seats in the House of Representatives, a loss that still would leave them comfortably in control. Democrats need a net gain of 25 to regain control.
The authoritative Rothenberg Political Report forecasts a Democratic pickup of fewer than 10 House seats. The Cook Political Report says the Democrats will gain between five and 15 seats.
In the Senate, consensus forecasts say Republicans should add two to five seats. The Republicans need to gain four seats to take a 51-49 majority and seize nominal control away from the Democrats. Rothenberg forecasts Republicans gaining two to four seats; Cook sees a gain of two to five. They still would be well short of the 60 votes needed to pass anything controversial.
A key factor: While most Americans hate Congress, they're not ready to give either party a huge mandate, or toss out incumbents in big numbers.
There are no signs of a wave election when voters seem to speak with one angry voice such as 2010, when they rose in backlash against President Barack Obama and Democratic control or, to a lesser degree, as they did in 2006 against President George W. Bush and Republican control.
"By and large, I don't think the electorate is ready to engage in a wholesale firing of members of Congress, even if they distrust the legislators in general - and may harbor suspicions about their own representative," said Burdett Loomis, a congressional expert at the University of Kansas.
Of course, things could change. The fragile economy could stumble. An international crisis could erupt. Independent voters, who are primed to be unusually decisive this year in close races, usually don't make up their minds until late fall.
"We're not going to know whether there is a wave until just before it breaks," probably in the fall, said Rep. Steve Israel, D-N.Y., chairman of the Democratic Congressional Campaign Committee. Israel is cautious, predicting Democrats will gain "in the range" of the seats needed for House control.
Republicans are equally circumspect. "We are cautiously optimistic about our chances of taking the Senate in November," said Brian Walsh, National Republican Senatorial Committee spokesman.
Of the 186 House incumbents who have run in primaries against non-incumbent challengers (some members were thrown together in the same district), only three have lost. One senator, Indiana's Richard Lugar, has been defeated in a primary.
In each case, the losses involved veteran lawmakers and uniquely local factors, not harbingers of national trends. Lugar, a Republican and 35-year Senate veteran, was seen as out of touch with his constituents.
Rep. Tim Holden, D-Pa., a 10-term veteran, ran in a redrawn district where many voters regarded him as too conservative. Rep. Jean Schmidt, R-Ohio, was denied a fifth term when GOP voters saw her as too centrist.
Eight-term veteran Rep. Silvestre Reyes, D-Texas, lost his primary May 29, succumbing to an aggressive challenge from a former city councilman and questions about ethics.
"The corruption issue was enough to motivate voters. Reyes had never really had any serious challengers. (Challenger Beto) O'Rourke went door to door and that plays well here. He's not Hispanic but he's bicultural, bilingual. He appealed to younger voters," said Gregory Rocha, political science professor at the University of Texas, El Paso.
Most incumbents have survived partly for traditional reasons. "It's tough to challenge an incumbent. They have name recognition and they can usually raise more money," said Nathan Gonzales, deputy editor of the Rothenberg Political Report.
Officeholders also benefit from carefully drawn districts, particularly this year, when the 2010 census often dictated new lines - lines that can be crafted block by block so that incumbents' districts will include the most friendly voters.
Another element aiding incumbents is divided government.
In 2006 and 2010, challengers could benefit by railing against the other guys who had the power. Throw the bums out, they argued, put us in charge and things will be different. Today, each party controls a piece of Washington, so incumbents can argue that the other party is to blame for gridlock, not them.
"The people most likely to vote are attentive, well-educated people who tend to be partisan. They may not like Washington, but they know enough about their co-partisans to think it's not their fault," said Steven Smith, director of the Weidenbaum Center on the Economy, Government and Public Policy in St. Louis.
Among the most closely watched states with House toss-ups is New York. Its huge base of moderate Republicans has been leaving the party, and redistricting has added to the uncertainty.
"People had been willing to split tickets, but recently they've been more or less voting for one party or the other," said Michael Malbin, professor of political science at State University of New York at Albany.
Senate races, because they involve broader constituencies, are more subject to national trends. Some of the biggest battles are due in swing states likely to see intense presidential campaigning.
Ohio, for instance, could be decided by voters' attitudes toward the fragile economy. Will they stay the course with incumbent Democratic Sen. Sherrod Brown, or try a new path with Republican Treasurer Josh Mandel?
Nevada's economy has been reeling, with unemployment that has been among the nation's worst. The state will be a major presidential battleground, and the races of Republican Sen. Dean Heller and Democratic Rep. Joe Heck are two to watch.
But so far, there's little evidence of voter outrage toward incumbents. "We've just been battered for so long, and we're seeing things come back a bit," said David Damore, associate professor of political science at the University of Nevada Las Vegas.
At least four other Senate races are seen as close:
-Wisconsin. Former Republican Gov. Tommy Thompson, a center-right candidate, has a history of winning statewide and could take the seat of retiring Sen. Herb Kohl, D-Wis. Thompson first has to win an Aug. 14 primary.
-Massachusetts. The race between Sen. Scott Brown, R-Mass., and consumer advocate Elizabeth Warren is likely to stay too close to call. Warren has stumbled over her claims to Native American heritage.
-Virginia. A battle of two former governors, Democrat Tim Kaine and Republican George Allen, vying for the seat being vacated by Sen. Jim Webb, D-Va. Webb beat Allen six years ago by only 9,300 votes out of more than 3.3 million cast.
-Montana. Sen. Jon Tester, a Democrat, won a tight race in 2006 against a weakened incumbent. This time he faces Republican Rep. Denny Rehberg, who has won six statewide races for Montana's only House seat.