Article snippet: (Bloomberg) -- National Democrats typically close ranks behind the party’s incumbents, but Elizabeth Warren is breaking with that practice. On Monday, the presidential candidate endorsed Jessica Cisneros, the liberal primary challenger to Representative Henry Cuellar of Texas, who has served since 2005. Cuellar is among the more conservative members of the Democratic caucus, voting in alignment with President Donald Trump’s position more often than all but a few of his party colleagues, according to FiveThirtyEight. The Cisneros campaign mocked Cuellar as “Trump’s favorite Democrat.” Cuellar’s district backed Hillary Clinton by 20 points in the 2016 election. Warren one of the few anti-abortion Democrats in Congress. Digital Access Home Delivery Gift Subscriptions Log In Manage My Account Customer Service Help & FAQs Globe Newsroom Advertise Newsletters View the ePaper Order Back Issues News in Education Search the Archives Privacy Policy Terms of Service Terms of Purchase Work at Boston Globe Media Link to the full article to read more