...nating Governors will be held in Pennsylvania, June 17th; lowa, July, 8th; Maine, August 6th. Republican State Conventions: Ohio, June 17; Pennsylvania, July; Maine, July 1. Governor Gamble, of Missouri , has called a meeting of the State Convention at Jefferson City, June 15th, "to consult and act upon the subject of emancipation of slaves, and such other matters as may be connected with the peace a...