Well Scoot, I can see your worry!  You pull the money from the teachers and the fed/state/local unions and the donkeys would only have control of 8 of these left!!! Notice how the evil corportations are giving to both parties and the unions have a one tracked mind... Tell me again who is bought and paid for.... 
Time to even out the playing field imo.
If your gonna play on the open secrets website learn how to use the tables and what they represent. Your list is an all time doners list. 
Go look at Super PACS , Pacs, 527's , and outside spending by view points. (This is some of the dirty money) 
US Chamber of Commerce    $32,851,997    Conservative           
American Action Network    $26,088,031    Conservative             
American Crossroads    $21,553,277    Conservative       
Crossroads Grassroots Policy Strategies    $17,122,446    Conservative             
Service Employees International Union    $15,795,194    Liberal            
American Fedn of St/Cnty/Munic Employees    $12,631,170    Liberal        
American Future Fund    $9,599,806    C    Conservative    
Americans for Job Security    $8,991,209 Conservative             
National Assn of Realtors    $8,890,737    Bi-Partisan        
National Education Assn    $8,746,556 Liberal        
In addition to "super PACs" and regular political action committees (which raise money via contributions capped at $5,000 per year), special interest groups have several other vehicles at their disposal to influence elections and policy as well. These include "527 organizations" which register with the Internal Revenue Service and 501(c) nonprofit operations, which may engage in political activities, as long as these activities do not become their primary purpose. 
501(c) groups must also register with the IRS, but, unlike 527 organizations, are not required to publicly disclose their donors.in 2010
190 Million  Conservative 
92.9 Million Liberal 
http://www.opensecrets.org/outsidespending/summ.php?cycle=2010&type=p&disp=Oand that's just disclosing groups here's non diclosing groups (501C)
120.9 million Conservative
15.9 million Liberal
http://www.opensecrets.org/outsidespending/summ.php?cycle=2010&chrt=V&disp=O&type=Uand I could go on ... but why don't you do some discovery learning using the proper tables and filters and understand which each represent so you gain the full picture. 
FYI if you added up all the donations the Koch's alone have contributed and added it to your all time doners list it would equal approx 32 million to tea Party, 50 million to organizations to fight climate change legislation, 34 million to union busting organizations , 10 million on lobbying and political donations, .... But again they work behind the scenes so they do not have to disclose , private dirty money. 
and one thing you are absoutely correct on is they want to eliminate the unions to eliminate the competiition and remain unchallenged
Democratic Party   $814,980,026   
Republican Party   $616,705,661