From POLITICO –
…all eyes are on the looming pivot points that could alter that narrative, though they are few, and will need to hit with serious impact — even the ballyhooed health care ruling has not, polls show, done much to significantly shift the campaign. Some are known and on the calendar; others hover over the Obama-Romney narrative, threatening but not necessarily materializing. Some are within the control of the campaigns, such as their debate performances. Some are global events that could be tethered to voter perceptions of one or both of the candidates, such as a true financial calamity in debt-dogged Europe.