cast more than 500 million votes in one election
... that in 1964, Illinoisans cast more than 500 million votes in one election?
... that in 1964, Illinoisans <b id="mwApc"><a href="./1964_Illinois_House_of_Representatives_election" id="mwApg" rel="mw:WikiLink" title="1964 Illinois House of Representatives election">cast more than 500<span id="mwApk" typeof="mw:Entity"> </span>million votes in one election</a></b>?