Rubio says he enjoys provoking the GOP front-runner.
Rubio's vote against military action "turned out to be a bad decision," Bush said.
"I think some of it has been unfair and not balanced," she said.
"It's time for us to say, wait a minute, we're better than this," says Clinton.
Trump says the controversial team name is a source of pride for many Native Americans.
The former president and his wife appear on Jeb's fundraising schedule for October.
The long-simmering rivalry between the candidates has spilled out into the open.
OPINION | A bit more fire will be required to get out of fifth place.
Bush can serve his country best by stepping aside.
The GOP presidential candidate said his comments were taken out of context.
Carson's support has doubled since July.
Rubio says Republicans are telling him "it's not your turn."
Team owner Daniel Snyder has donated $100,000 to a pro-Bush super-PAC.
"Who owns Marco Rubio?" the 15-second spot asks.
"As soon as he drops in the polls, he's gone," predicted the former "The Tonight Show" host.
Each has 18 percent support from Republicans in the Keystone State.
Personal enmities are out in the open in the race for the White House.
“Come on Jeb, you’ve got better things to do than investigate me. ... Maybe you don’t.”
"They hate each other," Trump said.
The GOP front-runner is up 11 points in the state.
The GOP contender also vowed to end Obama's climate rule for power plants.
Bush said Boehner is focused on solving problems.
“Our message is one of hope and aspiration,” Bush said.
The quarterly deadline for campaigns to report their finances is fast approaching.