Welcome to Monday’s Washington Secrets. Today we catch up with Roger Marshall, who is fighting for his political life in Kansas. He believes he can win and, like many Republicans, he says his private polling looks very different to the public numbers. So we also dive into some of the surveys, and some of the caveats that come with them:

EXCLUSIVE — Roger Marshall, the embattled senator from Kansas, says his internal polling shows he will win the state, so long as 175,000 Trump supporters don’t stay home.

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