WASHINGTON (AP) — A growing American economy and passage of a Republican tax overhaul appear to be helping President Donald Trump lift his approval ratings from historic lows, according to a new poll by The Associated Press-NORC Center for Public Affairs Research.

Trump remains unpopular with the majority of Americans, 58 percent. But 42 percent say they now approve of the job he’s doing as president, up seven points from a month ago. That’s a welcome change in trajectory for a White House that has been battered by chaos, controversies and internal upheaval.

The poll suggests that at least some of the president’s improving standing is tied to the economy, which has steadily grown and added jobs, continuing a trajectory that began under President Barack Obama. Nearly half of Americans surveyed — 47 percent — say they approve of how Trump is handling the economy, his highest rating on any issue. When it comes to tax policy, 46 percent of Americans back Trump’s moves.

For Republicans, that offers a glimmer of hope as they stare down a difficult midterm election landscape and a surge of Democratic enthusiasm. With few other legislative victories from Trump’s first 14 months in office, GOP lawmakers have largely pinned their hopes for keeping control of Congress on middle-class voters feeling the impact of the tax law.

“Our fortunes will rise and fall with the economy and specifically with the middle-class tax cut this fall,” said Corry Bliss, executive director of the Congressional Leadership Fund, a super PAC aligned with House Speaker Paul Ryan. Bliss urged Republican candidates to view the law as “an offensive, not defensive weapon.”