President Obama ’s high-risk immigration gamble may have severe consequences for Washington, the country and the Democratic Party, most of all Hillary Clinton .

Mrs. Clinton’s putative bid for the Democratic presidential nomination is already running into trouble. The national exit poll from the recently completed midterm elections showed her with less than a majority of voters (43%) saying she would make a good president. When pitted against an unnamed Republican candidate, Mrs. Clinton lost 40% to 34%.

Those grim numbers followed on a September WSJ/NBC poll showing a plunge in Mrs. Clinton’s favorability rating, to 43%, from 59% in 2009.

And that was before President Obama launched a defiant post-midterm campaign discarding political compromise and unilaterally doubling down on his unpopular policies. As a candidate, Mrs. Clinton would likely inherit a damaged party—and as a former member of his administration, she would struggle with the consequences of Mr. Obama’s go-it-alone governance.

To continue reading Douglas E. Schoen and Patrick Caddell's column in the Wall Street Journal, click here.

The latest headlines on the 2016 elections from the biggest name in politics. See Latest Coverage →

Patrick Caddell is a Democratic pollster and Fox News contributor. He served as pollster for  President Jimmy Carter, Gary Hart, Joe Biden and others. He is a Fox News political analyst and co-host of "Political Insiders" Sundays on Fox News Channel and Mondays at 10:30 am ET on "FoxNews.com Live."