Republicans in the US Congress have faced growing blowback from businesses that said they would cut off campaign contributions to those who voted last week to challenge President-elect Joe Biden's victory.
The announcements by Amazon, General Electric, Dow, AT&T, Comcast, Verizon Communications, American Express, Airbnb, Cisco Systems, Best Buy and Mastercard, among others, threaten to throttle fundraising resources for Republicans who will soon be out of power in the White House and both chambers of Congress.
AT&T and Comcast, for example, are among the biggest corporate donors in Washington.
Greeting-card giant Hallmark said it had asked senators Josh Hawley and Roger Marshall to return its contributions. Representatives for the two Republicans, who both objected to Biden's certification, did not immediately respond to requests for comment.
Copper giant Freeport-McMoRan said it would suspend contributions to all political candidates.
The announcements are a sign that some corporate donors, which typically spread their money widely around Capitol Hill, are reassessing their strategy after supporters of President Donald Trump attacked the Capitol last week in an effort to prevent Congress from formalising Biden's victory.
It is unclear whether their decisions will have a lasting impact. Fundraising activity is currently at a post-election lull in Washington, giving businesses and trade groups some time to figure out their approach.
Few companies have gone as far as Dow, which said it would withhold donations for the Republican lawmakers' entire terms in office - up to six years for those in the Senate. Others said they would withhold donations temporarily, or suspend giving to Republicans and Democrats alike.
At least five people died in last week's attack, which also forced lawmakers into hiding for several hours.
When they reconvened, 147 Republicans in the House of Representatives and the Senate voted to challenge Biden's victory in Pennsylvania or Arizona, even though both states already formally certified the results and election officials say there were no significant problems with the vote.
Those voting yes included the top two House Republicans, Kevin McCarthy and Steve Scalise, and Senator Rick Scott, who as incoming head of the National Republican Senatorial Committee will head up efforts to win back the Senate in the 2022 elections. All their jobs require extensive fundraising.
Amazon said it would discuss concerns "directly with those members we have previously supported" before deciding whether to resume contributions.