Giuliani Tumbles, McCain Stumbles, and Thompson Picks Up the Slack

We've updated our GOP and Dem primary indices for April, to take account of the major, national, public polls taken so far. You can click here to take a look at the indices and the data behind them, OR you can always click the tab on our menu bar, or look at the graphs on our home page.

The story, at least on the Republican side, is that so far this month both Rudy Giuliani and John McCain are dipping in support. Mr. McCain's below 20, and Mr. Giuliani's just above 30.

So, why are both of these candidates falling? Mitt Romney has edged up ever so slightly (from 7 to 8 to 9) over the last three months, but the real story is Fred Thompson, as this graph after the jump should make clear...