[Ref: BBC News item]

So, the Democratic contest is now officially down to two and the Republican race effectively reduced to the same number of realistic candidates. McCain gained Giuliani's endorsement while former Senator Edwards has yet to endorse either of the remaining Democrats, possibly not wishing to alienate either side in what is still likely to be a very close race. Meanwhile, Senator Kennedy has endorsed Barack Obama, saying he feels "change in the air".

Of course, the big and possibly decisive day is this coming Tuesday - Super Tuesday - with 24 states holding caucuses and primaries. I'll be doing my best within the confines of being in college for a week (which will be fairly full-time) to keep track of news as it breaks from the States.

Also keep an eye on:

• BBC News US Election coverage
• Electoral-Vote.com
• The Independent's Americas section
• The Independent's US Election Blog
• The Guardian's US Election coverage
• CNN's Election Centre