Tuesday is the deadline for Kansans to register to vote or update their registration in time for the primary election.
During the August 7 vote, Republicans and Democrats will chose their candidates for the fall election.
You can register to vote here.
A handful of incumbent Republican state senators are facing primary challenges in Kansas, and the leadership of the Senate hangs in the balance.
The goal of some Republicans in Kansas is to defeat the current moderate leadership in the Senate.
Turnout in primaries is often low.
Washburn University Political Science Professor Mark Peterson says whichever candidates can turnout their supporters will probably come out on top.