After months of legal wrangling over redistricting and three different primary dates, voters in Texas will finally be able to cast their ballots, tomorrow. Here’s a look at some of the races we will be closely monitoring.

US Senate Race

The Democratic and Republican races to replace outgoing Senator Kay Bailey Hutchison could both be headed to a runoff. The latest polls show Lieutenant Governor David Dewhurst in the lead; but not with the 51 percent needed for an outright win.

That runoff would likely be against former Solicitor General Ted Cruz. He’s polling in second place. Many of the issues in the US Senate race have been overshadowed by the negative ad war raging between Dewhurst and Cruz.

In an interview with Capital Tonight last week, former Dallas Mayor Tom Leppert told us he’s hoping to rise above the fray and secure the number two spot.

Capital Tonight will have a crew with both the Dewhurst and Cruz campaigns in Houston, as well as the Leppert campaign in Dallas. On the Democratic side, veteran Paul Sadler will join us for a live interview at 7:30 tomorrow night and we will have a crew with newcomer Sean Hubbard’s campaign in Dallas.

US House District 35

Longtime Austin Congressman Lloyd Doggett is running in a brand new district, this election. District 35 includes Austin and San Antonio, connected by a sliver of I-35. Doggett is a household name in Austin, and has had to focus most of his effort on winning over voters in San Antonio.

During an interview with Capital Tonight’s Karina Kling last Thursday, Doggett made it clear he needed his Austin base to show up at the polls, if he’s going to keep his seat in Washington.

Karina has been following this race all year, and will be with Congressman Lloyd Doggett as he watches the returns tomorrow night.

Williamson County District Attorney

The race for Williamson County DA is one of the most contentious local races, this election season. This campaign has seen a slew of negative attacks from both sides. Jana Duty has focused her attacks mainly on incumbent John Bradley’s handling of the Michael Morton case. Bradley has maintained that Duty doesn’t have the experience to be the District Attorney.

YNN’s John Salazar has followed both the Morton case and the Duty-Bradley race closely. He will be in Williamson County with the candidates, tomorrow night.

Other races we are watching

Capital Tonight will also have crews covering the Travis and Bell County sheriff’s races, the Republican primary for US Congressional District 35 and the Travis County District Attorney race.

Be sure to join us for a special Decision 2012 Primary Night edition of Capital Tonight tomorrow, live from the Bob Bullock Texas State History Museum. We will have live reports from our reporters stationed across the state, as well as analysis from our panel of experts. Our regular Democratic and Republican contributors Harold Cook and Ted Delisi will join us; as will regular commentator Harvey Kronberg from the Quorum Report. We’ll also be joined by political analyst Scott Braddock and James Henson from the Texas Politics Project.