Voters in six House districts currently held by vulnerable Republicans oppose the GOP tax plan.

According to new data from Democratic-leaning polling firm Public Policy Polling, which was tweeted out by former Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE aide Jesse Ferguson, the majority of voters in the surveyed districts oppose the GOP tax bill and think the bill primarily benefits the wealthy.

In Colorado’s 6th District, represented by GOP Rep. Mike Coffman Michael (Mike) Howard CoffmanColorado mayor says he called protesters 'domestic terrorists' out of 'frustration' Colorado governor directs officials to reexamine death of Elijah McClain in police custody Petition demanding justice for Elijah McClain surpasses 2 million signatures MORE, 57 percent of respondents said they opposed the bill, while only 41 percent supported it, and 67 percent think the wealthiest people will benefit the most.

Voters in Rep. Barbara Comstock Barbara Jean ComstockLive coverage: House holds third day of public impeachment hearings Gun debate raises stakes in battle for Virginia legislature Progressives face steep odds in ousting incumbent Democrats MORE’s (R) Virginia district said they are against the plan, with 58 percent saying they oppose and 40 percent saying they support it.

Fifty percent of respondents in Rep. Rod Blum’s (R) Iowa district said they oppose the plan, and 44 percent said they support it.

ADVERTISEMENT

In New York’s 24th District, where Rep. John Katko John Michael KatkoThis week: House returns for pre-election sprint Hillicon Valley: Simulated cyberattack success | New bill for election security funding | Amazon could be liable for defective products Lawmakers introduce bill to help election officials address cyber vulnerabilities MORE (R) holds the seat, 55 percent of respondents said they oppose the bill, compared to 40 percent supporting. More than 60 percent said they thought that the wealthiest would benefit most.

In Rep. Bruce Poliquin Bruce Lee PoliquinBallot measures across US aim to overhaul voting practices Dale Crafts wins Maine GOP primary to face Rep. Jared Golden House Democrats make initial ad buys in battleground states MORE’s Maine district, 53 percent oppose and 44 support the tax plan.

And in Rep. Steve Knight’s California district, 52 percent oppose the plan and 41 percent said they support it.

The House and Senate have both passed their versions of the tax plan, and congressional leaders are aiming to have tax reform passed by Christmas.

Critics have slammed the GOP plan over concerns that it would benefit the wealthy and corporations at the expense of middle-class and poor Americans, as well as increase the deficit.