"I’m not against anybody but I will be voting for Ted Cruz in the upcoming Republican primary."
"That doesn’t even count in a deck of cards," she said.
Trump has 41 percent support, with Cruz at 32 percent and Kasich at 21 percent.
Duckworth is trying to unseat GOP Sen. Mark Kirk, who is considered vulnerable this year.
She said John Boehner's remarks about Ted Cruz "were completely inappropriate."
Countering Trump, the Clinton campaign is offering a “woman card” for donations.
Cruz calls Boehner the "godfather of the Washington Cartel."
Trump mispronounced the nation's name in his first major foreign policy speech.
The American Federation of State, County and Municipal Employees's (AFSCME) political action committee released an ad on Friday attacking Sen. Pat Toomey (R-Pa.) for his Wall Street connections.
“Pat Toomey started his career as an...
The "Never Trump" ranks include lawmakers, party operatives, pundits and GOP donors.