Laura Russo is just the kind of voter the Republicans need, but the party's proposed tax overhaul, which includes limits on the deductions for mortgage interest, state taxes and property taxes, is pushing her away.

"I would be dramatically affected," she said. An airline pilot and single mother of two, she says that like many in her affluent Loudoun County, Virginia, neighborhood she stretched to buy her home. She fears it will become harder to sell that house or pay her other tax bills if President Donald Trump signs the plan into law.

Russo, 52, said she had voted for the Republican in every presidential race since 1992 until last year when she picked Hillary Clinton. She still voted for Barbara Comstock, the Republican who represents her district in Congress.