<div>Moderate Democratic candidates' strategy shifts from taking down Biden to attacking Warren</div> <!-- no image --> <div>For long-shot moderates trying to compete for the Democratic presidential nomination, this week’s debate in Ohio marked a significant shift in strategy.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=RINaVrpIo-U:Pb5FDNFvzJk:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=RINaVrpIo-U:Pb5FDNFvzJk:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=RINaVrpIo-U:Pb5FDNFvzJk:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=RINaVrpIo-U:Pb5FDNFvzJk:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=RINaVrpIo-U:Pb5FDNFvzJk:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/RINaVrpIo-U" height="1" width="1" alt=""></div> Posted by Reuters