special congressional election
... that both candidates in the 2011 special congressional election in Ilocos Sur's 1st district claimed they had the endorsement of the Liberal Party of the Philippines?
... that both candidates in the 2011 <b id="mwETY"><a class="mw-redirect" href="./Ilocos_Sur's_1st_legislative_district_special_election,_2011" id="mwETc" rel="mw:WikiLink" title="Ilocos Sur's 1st legislative district special election, 2011">special congressional election</a></b> in <a href="./Ilocos_Sur" id="mwETg" rel="mw:WikiLink" title="Ilocos Sur">Ilocos Sur</a>'s <a href="./Legislative_districts_of_Ilocos_Sur#1st_District" id="mwETk" rel="mw:WikiLink" title="Legislative districts of Ilocos Sur">1st district</a> claimed they had the endorsement of the <a href="./Liberal_Party_(Philippines)" id="mwETo" rel="mw:WikiLink" title="Liberal Party (Philippines)">Liberal Party of the Philippines</a>?