Rick Santorum has suspended his presidential bid, which effectively confirms former Massachusetts Governor Mitt Romney as the Republican nominee.
Romney has around 60% of the delegates he needs, but should comfortably win enough in the remaining primaries.
It will be interesting to see if the GOP is able to unite behind Romney. Obama is the favourite at this stage – 61% on Intrade, against 37% for Romney. However the Republicans should now start to target Obama rather than each other.
The Pollster average of the polls has Obama at 46.1% and Romney 44.5%, so the race is definitely competitive. Of course it is electoral college votes that count, not the popular vote, but the two are linked.
Also at this stage the Republicans are favoured to retain the House and gain a majority in the Senate, so if Romney can win, he will probably have a supportive Congress.