evidence: Republicans expect to lose some of their historic edge: The party that controls the White House loses an average of about 350 seats in state legislatures in midterm elections. Democrats lost more than 960 seats during the two midterms when former President Obama was in office. [...] "There is more Democratic enthusiasm than I have seen in the last few cycles. That’s a reality I can’t ignore," said Robin Vos, the Republican speaker of the Wisconsin state Assembly. "Democrats for the first time became frustrated with what’s happening in Washington." [...] Hints of a Democratic wave have come in special elections in a handful of states, from Wisconsin to New Hampshire, Florida to Missouri this year. In 2018, Democrats have won control of ten seats formerly held by Republicans in special elections.