People wait to attend a Mozilla press conference in Barcelona, Spain, in February. Mozilla's Firefox and other Web browsers allow users to opt out of third-party tracking cookies.
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Battleground Texas staff members and volunteers work around a table in a small backroom of the Travis County Democratic Office in Austin on April 24. Battleground Texas is an effort by veterans of the Obama campaign to take what they learned electing and re-electing a president and try to turn Texas blue.