A respected Chicago Board of Trade executive from Winnetka and a Long Grove businessman whose family owns the Ben Franklin variety store franchise are among those talking to Illinois Republican leaders about running against Democratic U.S. Sen. Dick Durbin next year. Both Kevin J.P. O'Hara, the chief administrative officer at the Chicago futures exchange, and Steve Greenberg, the wholesale executive, would seem to have the ability to write a check to cover some or all of the costs of a campaign. State GOP leaders consider that important in finding an opponent for Durbin, given the political dynamics in play. Whoever...