lose a primary
...that Democrat Bob Holden was the first incumbent Missouri Governor to lose a primary?
...that <a href="./Democratic_Party_(United_States)" id="mwFPQ" rel="mw:WikiLink" title="Democratic Party (United States)">Democrat</a> <a href="./Bob_Holden" id="mwFPU" rel="mw:WikiLink" title="Bob Holden">Bob Holden</a> was the first incumbent <a class="mw-redirect" href="./List_of_Governors_of_Missouri" id="mwFPY" rel="mw:WikiLink" title="List of Governors of Missouri">Missouri Governor</a> to <b id="mwFPc"><a class="mw-redirect" href="./Missouri_gubernatorial_election,_2004" id="mwFPg" rel="mw:WikiLink" title="Missouri gubernatorial election, 2004">lose a primary</a></b>?