The two major parties will come together in the next few weeks to make their presidential tickets official.  CNN.com Live is your home for all the action from the Republican and Democratic National Conventions.

Today's programming highlights...

12:00 pm ET - Biden at Virginia Tech - Vice President Joe Biden delivers remarks at a campaign event on the campus of Virginia Tech in Blacksburg, Virginia.

1:25 pm ET - Obama in Iowa - President Obama wraps up his campaign swing in Iowa with two events, starting with a speech in Dubuque.  He'll then make remarks in Davenport at 6:35 pm ET.

6:00 pm ET - Ryan returns to alma mater - GOP vice presidential candidate Rep. Paul Ryan attends a "victory rally" on the campus of Miami University in Oxford, Ohio.

CNN.com Live is your home for breaking news as it happens.