Here is the data of contributions from oil company employees (and in McCain's case, PAC, Political Action Committees, too) to the presidential campaigns.

http://prezoilmoney.oilchangeusa.org/index.php?type=search

Choose the candidate and then click on TABLE VIEW and then click on each company icon and you can see the contributor who donated and listed their employer as that company.

The RELATIONSHIP VIEW page that first comes up is very confusing. TABLE VIEW is easier to read and lists each person's name.

Total Obama as of creation of that table: Accepted $404,160 in oil contributions to election campaigns since 2000. $0 of those dollars were from industry PACS.

Total McCain as of creation of that table: Accepted $1,196,680 in oil contributions to election campaigns since 2000. $32,900 of those dollars were from industry PACS.