Early voting for next Tuesday's election begins Monday.
One of the key races in that election is for the senate seat vacated by Kay Bailey Hutchison, who is retiring.
Both Republicans and Democrats will vote in run-off elections Tuesday.
Republicans will choose between Lt. Gov. David Dewhurst and former Solicitor General Ted Cruz. Democrats will pick between Paul Sadler and Grady Yarbrough.
Early voting runs through Friday.
