Every candidate for selection in a primary election as the nominee of a political party for the office of State Senator shall file with and place in the possession of the county chairman of the county in which he resides, or such other officer as may be named by the county committee of the county in which he resides, at the same time as those wishing to offer for nomination in such primary for county-wide or less than county-wide office, a notice or pledge as required by Section 7-11-210.