Dozens of people have been killed and wounded in a series of coordinated terror attacks in Paris.

Many of the 2016 presidential candidates took to Twitter to express their thoughts and prayers for the victims and the people of France.

LATEST: Death Toll in Paris Terror Attacks Climbs to 40, 100 Taken Hostage

Geraldo Reveals That His Daughter Was at Paris Stadium During Terror Attack

'I Don't Want to Die Today': American Witness Recounts Paris Restaurant Attack

Rep. King: Paris Terror Attacks Should Be a Wake-Up Call for the U.S.