Texas Sen. Ted Cruz (R) and Rep. Beto O’Rourke (D) are slated to hold three debates in their Senate race in the lead-up to the November elections, the campaigns announced Friday.

The candidates are set to appear in debates between Sep. 21 and Oct. 16. Each debate will be one hour long and they are scheduled to take place in Dallas, Houston and San Antonio.

Both campaigns have wrangled over the number of debates they would participate in before November, with polls showing the nationally watched Senate battle remaining close less than two months from the election.

In April, O’Rourke challenged the incumbent GOP senator to six debates. Cruz countered two months later by suggesting holding five debates in October. O’Rourke rejected that proposal, which had all five debates happening on Friday evenings during high school football.