Oregon Gov. Kate Brown (D) said she supports requiring President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE and other presidential candidates to release their tax returns in order to appear on the ballot for Election Day.

“We have to hold our elected officials accountable. I think this is just one way of doing it,” Brown said in an interview with HuffPost published Monday.

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Brown's remarks follow recent action in California, where Gov. Gavin Newsom Gavin NewsomOVERNIGHT ENERGY: California seeks to sell only electric cars by 2035 | EPA threatens to close New York City office after Trump threats to 'anarchist' cities | House energy package sparks criticism from left and right California seeks to sell only electric cars by 2035 EPA head questions connection of climate change to natural disasters MORE (D) last month signed into law a measure that would require candidates for president and governor to disclose federal tax returns from the five most recent years in order to appear on the primary ballot.

Earlier this year, legislation was introduced in the Oregon state Senate requiring presidential and vice presidential candidates to disclose tax returns in order to appear on the ballot in general elections. The measure was still in committee when the Democratic-controlled legislature adjourned.

The state legislature is scheduled to reconvene in January. Oregon's 2020 presidential primaries are scheduled for May.

The California law prompted legal challenges from Trump, the Republican National Committee (RNC) and a group of voters represented by the conservative group Judicial Watch.

The RNC weighed in on Brown's comments Monday, with spokesman Steve Guest saying, “Instead of trying to beat President Trump at the ballot box, Democrats are resorting to unconstitutional, undemocratic, and just plain desperate tactics.”

A spokesperson for Brown said her remarks to HuffPost were made in response to California's law, not any specific measure in Oregon.

Those challenging the California law have argued it's unconstitutional. When Newsom signed the measure into law, he released statements from legal experts who argued that it is constitutional.

Brown told HuffPost that she expects "you’ll see other legislation like this in the future.”

Trump has refused to release his tax returns, becoming the first president in decades not to voluntarily make his filings public. He has cited an IRS audit, but the IRS has said nothing prevents people from making their own tax information public.

Democrats have taken a number of steps in their efforts to obtain Trump's tax returns.

In Congress, House Democrats have requested six years of Trump's federal tax returns from the IRS. The Democratic-led House Ways and Means Committee filed a lawsuit last month in an effort to get a judge to order the Trump administration to comply with the request.

New York enacted legislation last month to allow the chairs of Congress's tax committees to request officials' state tax returns. Trump has filed a lawsuit challenging the New York law, and the judge overseeing the case has temporarily blocked New York from providing the Ways and Means Committee with Trump's returns if the panel requests them.

Updated at 5:31 p.m.