Give voters a signal that you won't need the Democratic Party's left wing after you are re-elected. Let the center know you may have fooled around with crazy spending your first term, but if re-elected, you'll be faithful, live on the family budget and settle down at home with them.

Oh yes, and mean it.

Alex Castellanos, a CNN contributor, is a Republican consultant and the co-founder of Purple Strategies. Follow him on Twitter: @alexcast.

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