Republican leaders are increasingly worried that their candidates for governor and Senate are in political trouble across Michigan, Pennsylvania, Minnesota and other states that the party prizes, and that the difficulties could spill into House races that the G.O.P. needs to win in November to keep control of the chamber.
Their concerns also extend to Democratic-leaning states like California, Illinois and Virginia, where top-of-the-ticket Republicans are running well behind in polls — allowing Democrats to focus millions of dollars of spending as well as campaign time and turnout efforts in hotly contested House districts in hopes of knocking off G.O.P. incumbents.
G.O.P. Candidates Struggling in Key Battlegrounds, With House at Stake
Party leaders worry that candidates for governor and Senate are in trouble in Michigan, Illinois, Minnesota, Pennsylvania and possibly Wisconsin, and that difficulties could spill into House races.
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