Portman and Toomey face tough reelections in states won by President Obama.
Lisa Hagen 08/28/16 04:34 PM EDT
The winner between the bruising Grayson-Murphy fight faces a tough race against Marco Rubio.
McCain is taking fire from both sides over the GOP nominee.
OPINION | Throw out the current do-nothing crop in Congress
"He's gotten weak and he's gotten old," Kelli Ward said.
A new web ad will be released on Thursday.
"I don't think that rhetoric is consistent with the views of most people in Illinois."
Donald Trump said the former Texas governor is a "popular guy."
Katie McGinty said Toomey has shown "no leadership" on gun control legislation.
OPINION | Alliances out of political necessity nothing new to either party.