It's not what you think. Boehner isn't afraid of undue influence by lobbyists. It's something far more puerile:

Some Republican congressmen have been warned to keep their distance from the female lobbyists who prowl Capitol Hill.

Sources say House Minority Leader John Boehner has told GOP congressmen who partied with lobbyists "to knock it off." His spokesperson said, "Boehner has always told all our members that they will be held to the highest ethical standards."

Yeah, ethical. That's not usually a word I associate with Republicans, but it does strike me as typical that Boehner is fearful of these wicked women "prowling" around the halls of Congress, waiting to lead some poor man astray.

Of particular concern apparently is Rep. Lee Terry, a married Republican congressman from Nebraska, who was seen drinking and carousing with a female lobbyist:

Who, particularly is [Boehner] targeting? Maybe Rep. Lee Terry of Nebraska, whom a Post reporter overheard asking a female lobbyist “Why did you get me so drunk?” at the Capital Hill Club, until he realized the reporter was nearby and changed the subject to her family.

Of course, he's not the only one:

Meanwhile, a Kansas City blog posted photos of Missouri Rep. Sam Graves dining with a blond lobbyist from the Patriot Group at a DC restaurant. His office didn't respond to our repeated requests for comment.

And lobbyist Glenn LeMunyon's DC row house has been a hot spot for lobbyists who want to meet House members, including California's Duncan Hunter, Pennsylvania's Bill Shuster and Terry.

LeMunyon uses the house as an office during the day, a fund-raising space Some nights, and a place for congressmen to mingle after-hours with lobbyists.

The Cook Political Report (subscription req'd) has looked at 30 congressional races and upgraded them for the Democratic Party. Many of these races are in heavily entrenched Republican areas, but it's clear that the prevailing attitude towards the GOP and the great work these Democratic candidates have been doing (often with help from the netroots) has put a whole bunch more of the House in play:

AL-03 Mike Rogers Solid Republican to Likely Republican
CA-46 Dana Rohrabacher Solid Republican to Likely Republican
FL-08 Ric Keller Likely Republican to Lean Republican
FL-09 Gus Bilirakis Solid Republican to Likely Republican
FL-18 Ileana Ros-Lehtinen Solid Republican to Likely Republican
FL-21 Lincoln Diaz-Balart Likely Republican to Lean Republican
ID-01 Bill Sali Solid Republican to Likely Republican
IN-03 Mark Souder Solid Republican to Likely Republican
IA-04 Tom Latham Solid Republican to Likely Republican
KY-02 OPEN (Lewis) Solid Republican to Likely Republican
MN-02 John Kline Solid Republican to Likely Republican
NE-02 Lee Terry Solid Republican to Likely Republican
NV-02 Dean Heller Solid Republican to Likely Republican
NJ-05 Scott Garrett Solid Republican to Likely Republican
NY-13 OPEN (Fossella) Toss Up to Lean Democratic
NY-25 OPEN (Walsh) Toss Up to Lean Democratic
NC-10 Patrick McHenry Solid Republican to Likely Republican
OH-07 OPEN (Hobson) Solid Republican to Likely Republican
PA-03 Phil English Likely Republican to Lean Republican
PA-05 OPEN (Peterson) Solid Republican to Likely Republican
PA-11 Paul Kanjorksi Likely Democratic to Lean Democratic
PA-15 Charlie Dent Solid Republican to Likely Republican
TX-07 John Culberson Solid Republican to Likely Republican
TX-10 Michael McCaul Solid Republican to Likely Republican
VA-05 Virgil Goode Solid Republican to Likely Republican
VA-10 Frank Wolf Solid Republican to Likely Republican
WV-02 Shelley Moore Capito Likely Republican to Lean Republican
WY-AL OPEN (Cubin) Solid Republican to Likely Republican