By Jason Lange and James Oliphant

WASHINGTON, Dec 11 (Reuters) – Recent electoral victories have given Democrats increasing hope of taking back one and perhaps both houses of the U.S. Congress in next year’s midterm elections, but a new Reuters/Ipsos poll suggests that some of that enthusiasm may be premature.

Republicans hold a greater advantage with older voters, who are more likely to turn out during non-presidential years. And those voters may be less swayed by the kind of cost-of-living issues that have animated recent ‍Democratic campaigns, the poll found.

The poll “shows there is still a lot of work ahead for Democrats to unify their base and to demonstrate they can meet the moment,” said Joel Payne, a longtime Democratic strategist.

Democratic candidates have in recent months b

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