I'm reposting an email which Dr. Paul Hsieh posted to OActivists:
This upcoming week will be 
*the* critical week in the health care fight. Speaker Pelosi is expected to start the process for the House to hold its final vote to approve the Senate Bill.  The vote will probably take place at the end  of this upcoming week.
Right now, they are probably still a few votes shy  of the majority they need:
"Dem House vote-counter lacks health care  votes now"
http://news.yahoo.com/s/ap/20100314/ap_on_bi_ge/us_health_overhaul"Can  Nancy Pelosi Get the Votes?"
Michael Barone, Wall Street Journal,  3/11/2010
http://online.wsj.com/article/SB10001424052748703701004575113292688090292.htmlHence,  this is an 
*extremely* risky move by the Democrats.  Normally, a Speaker  wouldn't plan on voting on such major legislation unless he or she was sure of  having enough votes. 
But the Democrats are also (correctly) concluding  that time is not on their side.  They have made the calculation that if they  push for it now, then maybe then can squeeze out the last few votes via a  combination of threats and bribes.  For example, they have "sweetened" the deal  for the wavering moderates by promising billions of dollars of new student loan  subsidies:
http://news.yahoo.com/s/ap/20100314/ap_on_bi_ge/us_health_overhaulOn  the other hand they recognize that if they wait much longer, then when these  wavering Congressmen go back home for the Easter recess, they will get an earful  from their constituents who are strongly opposed to the bill, and they'll lose  even more support:
http://www.weeklystandard.com/blogs/health-care-end-game-begins-mondayHence,  from the Democrats' perspective, it's now or never.
From our perspective,  this means three things:
1) We are winning.  We have a chance to defeat  this terrible bill.
In particular, do not get discouraged when you read  the inevitable news stories about how the Democrats are "close to getting the  votes" or how Pelosi is "confident she'll have the votes".  She has to exude an  aura of public confidence, otherwise her coalition will quickly unravel.  
Polls repeatedly show Americans opposed to ObamaCare:
"Why Obama  Can't Move the Health-Care Numbers"
Rasmussen and Schoen, Wall Street  Journal, 3/9/2010
http://online.wsj.com/article/SB10001424052748704784904575111993559174212.htmlSimilarly,  head counts of House Democrats also show that they don't quite have enough votes  yet:
"Scrambling for votes, Democrats face uphill climb to pass  healthcare reform"
The Hill, 3/13/2010
http://thehill.com/homenews/house/86577-scrambling-for-votes-dems-face-uphill-climb-to-pass-health-reform"The  Hill's 'Whip Count' on ObamaCare –- as of 3/13/2010"
http://hotair.com/greenroom/archives/2010/03/13/the-hills-whip-count-on-obamacare-as-of-today/If  they had the votes, they'd have already passed it by now.
2) We have to  keep the pressure up.  The Democrats are pulling out all stops to find someway  to get this through now, before the critical Easter recess.
At this  point in time, the single most important thing you can do is tell your  Congressman to vote "NO" on this bill:
http://www.usa.gov/Contact/Elected.shtmlThis  is especially important if your Congressman is one of the undecided or swing  votes on this "Code Red" list:
http://www.nrcc.org/CodeRed/targets/http://www.teapartypatriots.org/BlogPostView.aspx?id=84e5b956-bfe9-4024-9fd3-aaf17cc00012But  even if your Congressman is a firm "Yes", it's still important to let them  know.  If even the liberal Democrats from "safe" seats consistently hear that  their constituents are against it, it will give the wavering moderates more  political cover to vote "No".  They can tell their Pelosi, "Even *your*  constituents hate this thing -- there's no way I can support it".  
*** Our counter-pressure is our best weapon against the pressure that  the statists will exert on these wavering Congressmen.  ***
Your  letter doesn't have to long or eloquent.  It just has to convey certainty,  passion, and moral conviction.  Something short and simple like:
"Please  vote NO on this terrible health care plan! If you vote yes, you will destroy the  ability of me and my family to receive good health care in the future. This is  personal!  If you vote yes, we will never forgive you for hurting our lives and  trampling on our basic freedoms."
(You may wish to adapt that to suit  your own style and values.)
Feel free to use all contact methods - phone,  fax, and e-mail.   And please feel free to contact them multiple times over the  upcoming week.  In this context, repetition is a virtue!
And of course,  if your Congressman is a probable or firm "No", then thank him or her for his  position.  They also need our moral support.
3) If you have friends or  family in other parts of the country, tell them to do the same thing and contact  
*their* Congressmen:
http://www.usa.gov/Contact/Elected.shtmlIf  you need intellectual ammunition for them, one of my personal favorites is from  the AFCM website:
"Fifty Fallacies About Health Care" by Richard  Ralston
http://afcm.org/fallacies.htmlJared  Rhoads' Lucidicus Project also has a good set of OpEds:
http://lucidicus.org/editorials/archive.phpAnd  of course, FIRM has its archive of articles/OpEds:
http://westandfirm.org/articles.htmlI  personally think that the most important thing we can do in the next few days  will be to directly contact our Congressmen and have friends/family do the  same.  LTE's and OpEds will still be important, but not as much as before.   (That said, I'm stilll going to continue writing and/or disseminating some of my  earlier writings to people I know around the country.)
This is the  endgame, folks.  Most political observers regard the health care bill as a 50-50  "toss-up" or "too close to call".  It really could go either way.  What happens  this week will set the course of this great country (for good or for ill) for  decades to come.
Your voice could be the critical difference in  swaying the right one or two minds.  If you value your lives and your freedom,  the time to speak up is 
*now*!