by-election in 1869
... that a by-election in 1869 was held in the borough of Blackburn, Lancashire, England, after an election petition led to a previous election being overturned due to systematic intimidation?
... that a <b id="mwCZQ"><a class="mw-redirect" href="./Blackburn_by-election,_1869" id="mwCZU" rel="mw:WikiLink" title="Blackburn by-election, 1869">by-election in 1869</a></b> was held in the <a href="./Blackburn_(UK_Parliament_constituency)" id="mwCZY" rel="mw:WikiLink" title="Blackburn (UK Parliament constituency)">borough of Blackburn</a>, <a href="./Lancashire" id="mwCZc" rel="mw:WikiLink" title="Lancashire">Lancashire</a>, <a href="./England" id="mwCZg" rel="mw:WikiLink" title="England">England</a>, after an <a href="./Election_petition" id="mwCZk" rel="mw:WikiLink" title="Election petition">election petition</a> led to a <a class="mw-redirect" href="./United_Kingdom_general_election,_1868" id="mwCZo" rel="mw:WikiLink" title="United Kingdom general election, 1868">previous election</a> being overturned due to systematic intimidation?