Anna Sale here on the day shift.

It's a big political day tomorrow, as voters go to the polls in a dozen states to make their primary picks for the midterm elections. Our Washington correspondent Todd Zwillich laid out some of the major themes this morning — the prominence of women candidates, progressive anger and organizing in Arkansas — but there's still a lot more to watch. We're reaching out to voters in Arkansas and Nevada to see what's driving the anger against incumbent Senator Blanche Lincoln and Senate Majority Leader Harry Reid. We're also taking a look at the politics of Silicon Valley, as former tech executives Meg Whitman and Carly Fiorina take the GOP stage.

As part of California's elections tomorrow, voters may put an end to the current partisan primaries. To start the conversation, we're asking for YOUR suggestions: How would YOU change the primary system? Text  the word TAKE to 69866 and leave your answer (standard data rates apply).

We will also look at the oil spill's impact on jobs. We talked this morning about the spill's impact on tourism and how, depending on your perspective, the net effect is different, as vacationers consider abandoning plans to visit the gulf region (loss) and choose other destinations instead (gain). We'll look at this dynamic in the jobs market, as oil industry workers fear for their jobs at the same time that the clean-up effort is hiring.

Finally, writer and political critic Christopher Hitchens will join us live tomorrow. We'll talk about his new memoir, "Hitch-22" to start, but because he and John Hockenberry go way back, there's no telling where we'll end up.