The big picture: 2018's stormiest clouds for the GOP

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A source close to Republican leadership emails about the biggest political clouds hovering over the rest of the year:

"Only thing that matters now is a) how bad they get crushed on ACA premium increases; b) the final Mueller verdict; and c) how crazy Trump gets with the CR."

Between the lines: Republicans are worried about the potential for health insurance premiums to skyrocket in September, shortly before the midterms. Democrats are seizing on health care as their number one issue.