About 876,000 sample ballots and information pamphlets started going out to Riverside County voters last week for the presidential primary election on June 7. About half will be mailed initially, with the remainder sent by the end of next week.

Voters may mark their selections on the sample ballot and use it as a guide to help them complete their official ballot at the polls. The registrar of voters recommends that voters review the materials before casting an official ballot. If voters do not receive an informational guide in the mail, it will be available online at www.voteinfo.net. Voters also may call the registrar’s office at 951-486-7200 or 800-773-8683 to request a mailed copy.

The June 7 election is a countywide election. Registered voters in all areas of the county are eligible to cast votes in this election. For questions about your eligibility to vote, contact the registrar’s office.

Voter polling-place locations are printed on the back cover of the information pamphlet, which includes an application to request a vote-by-mail ballot. A Spanish-language version of the pamphlet will be available at www.voteinfo.net and a copy can be mailed upon request.

Below is a list of important deadlines for the June 7 election:

• May 9 – First day of early voting in the Registrar of Voters Office and first day the registrar is allowed to mail vote-by-mail ballots to voters.

• May 23 – Last day to register to vote or change political party preference for the June 7 election.

• May 31 – Last day the registrar may accept mailed requests for vote-by-mail ballots. After May 31, voters must go to the registrar’s office to request and pick up a vote-by-mail ballot. Voters who have requested, but not received, a vote-by-mail ballot by May 31 should call the registrar’s office.

• June 7 – Election day.

Polling places are open from 7 a.m. to 8 p.m. on election day. Vote-by-mail ballots must be received by elections officials no later than the close of the polls on election day, or be postmarked on or before election day and received no later than three days after election day to be counted.

Important information regarding the presidential primary election:

Your voting right in the presidential primary depends on the political party in which you are registered. If you are registered with a political party, you can vote only for a candidate running for president in that party. A “No Party Preference” voter will automatically receive a non-partisan ballot, which will have no presidential candidates listed. However, upon request, a “No Party Preference” voter can, instead, receive a ballot to vote the presidential ballot of the following parties: American Independent Party, Democratic Party or Libertarian Party.

If you want to register, update your address or change your political party preference, you must complete a voter registration application and submit it by May 23. You can register online at registertovote.ca.gov or request a paper application by calling 951-486-7200.

There are 34 U.S. senator candidates on the ballot. Look at your ballot carefully. Be sure to cast only one vote for U.S. senator or your vote will not count.