In recent weeks, uproar over Silicon Valley’s alleged bias against conservatives has intensified—from Project Veritas secretly filming Twitter employees to fired Google engineer James Damore suing his former employer for allegedly discriminating against whites, males, and conservatives at a company that is 69 percent white and 56 percent male.

Now Lincoln Network, a right-leaning political group for tech workers, wants to enter the fray as a voice of reason—armed with data.

“I think everyone agrees that this topic is not going away,” says Lincoln Network cofounder Garrett Johnson, a former Rhodes Scholar who sold his Y Combinator-backed messaging startup in 2016. Johnson says Lincoln Network wants to “constructively engage in this conversation,” in hopes of improving the work environment at tech companies.

Over the past couple of months, Lincoln Network conducted an online survey of 387 employees of companies like Google, Facebook, Apple, Uber, and Salesforce, plus one-on-one interviews with 23 respondents who agreed to speak anonymously. Respondents volunteered to take the survey after seeing the link online or on internal forums at companies like Google.

The survey found employees who identify as conservative or very conservative are increasingly uncomfortable at work. Two-thirds or more of respondents who describe themselves as libertarian, conservative or very conservative say they feel less comfortable sharing their ideological views with colleagues since Google fired Damore in August. But only 30 percent of liberals and 14 percent of people who say they are very liberal feel that way.

Johnson says he hopes the survey sparks a broader conversation about ideological tolerance in the workplace. Employers should care because if conservatives feel like they can't bring their "whole self" to work that could affect performance, he says, referencing a popular mantra in the tech industry, which has been usually supportive of free expression in the workplace.

The results represent an incredibly narrow self-selecting sample of tech workers. The subset of “very conservative” employees, for instance, encompasses just 20 individuals.

However, respondents were fairly well dispersed across the ideological spectrum. The largest subset, 24 percent, identified as libertarian; 17.6 percent identified as conservative, 5.2 percent identified as very conservative, 16.3 percent identified as moderate, 18.3 percent identified as liberal, and 11.1 percent as very liberal.

The survey did not ask which views respondents felt were being silenced. Johnson says conservative tech workers have told him they feel uncomfortable discussing traditional views of marriage or family. “The issue of cultural norms when it comes to family and sexual orientation, those are difficult conversations, they are just intensified in the Bay Area,” Johnson says.

One Salesforce employee who participated in the survey, but did not want to be named, says he didn’t vote for Donald Trump in the 2016 election for fear it might hurt his career if it became known. “I have trouble believing that they would be able to make a rational decision about that person’s promotion or career growth or endorsement of that person,” knowing that the person voted for Trump, he says. A Salesforce spokesperson says, “Voting is a private matter. However, Salesforce is proud to have 30,000 employees who bring a diverse set of views and perspectives to our workplace.”

Mike Wacker, a Google software engineer who did not respond to the survey, says being a Republican at a tech company feels similar to being a Republican in college. “In both environments, you're often the token Republican, and Republicans are deeply unpopular,” he says. “But I felt more comfortable as a Republican in college than I feel now as a Republican in tech."