ON THE TRAIL: Thursday, February 21, 2008

On The Trail: 

Hillary Clinton and Barack Obama face off in Austin at a debate sponsored by CNN, Univision and the Texas Democratic Party, from 8 to 9:30 p.m. ET.

* Hillary Clinton is in Texas, where she attends an early vote event at Old City Hall in Laredo, and participates in the CNN Democratic debate in Austin.

* Mike Huckabee is in Texas. He attends a campaign rally at the Renaissance Houston Hotel, then attends a private fundraiser in Houston. Later, he visits the Alamo and attends a rally at St. Mary's University, both in San Antonio.

* John McCain holds a meet and greet and a media availability at Charlie's Restaurant in Perrysburg, Ohio, and a private fundraiser. Later, he holds a media availability at Ford Motor Company Wayne Assembly Plant in Wayne, Michigan, and attends another private fundraiser before heading to Indianapolis, Indiana for the evening.

* Barack Obama is in Texas, where he participates in the CNN Democratic debate in Austin.