Voters have three more weeks to register if they want to vote in the Democratic or Republican primary for the special election for the U.S. Senate.

The primaries are Aug. 15. State law allows voters to register, or update their registration if they have moved, no later than 15 days before the election, the secretary of state's office says. That puts the deadline at July 31.

Information about how to register online and other information is available on the secretary of state website.

Ten Republicans and eight Democrats are running for the seat left by Jeff Sessions when Sessions became U.S. Attorney General.

The last day to apply for an absentee ballot is Aug. 10.

Runoffs for the Senate seat, if necessary, will be Sept. 26. The Democratic and Republican nominees will square off in the general election on Dec. 12.