Some recent polls show that the majority of Americans still don’t support the tax law, despite an uptick in sentiment since the end of 2017. And a special House election in a conservative district of Pennsylvania in March delivered an upset victory to the Democratic candidate, who’d framed the tax cuts as a giveaway to the wealthy.

“If they can’t run on tax cuts in a district Trump won by 20 [points] and win, where can they run on tax cuts and win?” said David Wasserman, House editor of the nonpartisan Cook Political Report.

After most individual taxpayers finish up their returns this week, all eyes will turn to what the tax code revamp means for next year’s filings and beyond.