Mark Guethle, the new chairman of the Kane County Democratic Party, said he voted for a Republican in the 2000 primary election because his union told him to. Guethle's Kane County voting history indicates he took a Republican ballot in the 2000 primary election. Now the union's political organizer, Guethle said Painters Union District Council No. 30 strongly supported Sunny Abello, who was challenging State Sen. Chris Lauzen, R-Aurora, in the primary."It wasn't the first time," Guethle said of voting in a Republican primary on the directive of his union."When the union director sends you a letter, you read it...