The National Republican Senatorial Committee (NRSC) is facing heat after slamming Rep. Tammy Duckworth (D-Ill.) for “not standing up for veterans.”

Duckworth lost both of her legs while serving as a U.S. Army helicopter pilot during the Iraq War.

The tweet got deleted, but here it is: pic.twitter.com/lQz2WVZK48 — Steven Rich (@dataeditor) March 8, 2016

An NRSC aide acknowledged the mistake and said the tweet was deleted in minutes.

“It would be great if reporters would pay as much attention to a deleted tweet as they should to Tammy Duckworth being sued by VA whistleblowers for ignoring claims of mistreatment and corruption,” said NRSC spokeswoman Andrea Bozek in a statement to The Hill.

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Duckworth is the Democratic favorite to take on Sen. Mark Kirk Mark Steven KirkLiberal veterans group urges Biden to name Duckworth VP On the Trail: Senate GOP hopefuls tie themselves to Trump Biden campaign releases video to explain 'what really happened in Ukraine' MORE (R-Ill.) in what should be one of 2016's tightest races. Kirk is one of the Democrats' top targets.

A Duckworth campaign aide directed his fire at Kirk’s campaign for the NRSC tweet.

"Tasteless and dishonest, just like everything else to do with Mark Kirk’s flailing campaign. Tammy has made fighting for Veterans her life’s work, and will continue to do so in the Senate,” said Duckworth deputy campaign manager Matt McGrath in a statement.

This story was updated at 4:28 p.m.