Analysts said the Democrats’ class of candidates is broad enough and strong enough to defend their own seats and win the 23 seats they need to flip control of the House. Congressional primaries close out with elections Tuesday in New Hampshire and Wednesday in Rhode Island. “A House flip is not guaranteed, but the Democratic position has probably been getting a little stronger as opposed to a little weaker over the past several months,” said Kyle Kondik of UVA’s Center for Politics.