Bob Dole is likely to exceed the 996 delegates he needs to become the Republican presidential nominee today as voters in four key Midwest states go to the polls. At stake today are 219 delegates from Michigan, Ohio, Wisconsin and Illinois and an additional 10 delegates to be picked by GOP leaders in Illinois. Dole is a prohibitive favorite to sweep the field everywhere except Michigan, and with 791 delegates already, he could secure more than 1,000 delegates by tonight. With the nomination for the most part secured, Dole is already back "at work" in Washington. Today he turned his attention towards President Clinton, and said it was time to put a "common sense conservative back in the White House."