won the popular vote by a 51–48% margin
... that even though he won the popular vote by a 51–48% margin, Samuel J. Tilden failed to win the U.S. presidency in 1876?
... that even though he <b id="mwBDY"><a class="mw-redirect" href="./Samuel_Tilden_presidential_campaign,_1876" id="mwBDc" rel="mw:WikiLink" title="Samuel Tilden presidential campaign, 1876">won the popular vote by a 51–48% margin</a></b>, <a href="./Samuel_J._Tilden" id="mwBDg" rel="mw:WikiLink" title="Samuel J. Tilden">Samuel J. Tilden</a> failed to win the U.S. presidency in 1876?