That a primary is being openly discussed, though, reflects how fully Mr. Obama's relationship with his party's liberal activists has ruptured and the considerable confusion on the left over what to do about it.
However, the range of the reference intervals shown in Figure 6 (left) highlights the considerable uncertainty around this measure.
Why the considerable delays?
Several tunnels connect the right bank of the city with the left bank, where considerable residential and industrial development has taken place since World War II.
Considerable displacement in the left tunnel closer to the excavation induced by the nearby excavation was revealed by field monitoring.
Colubrid, any member of the most common family of snakes, Colubridae, characterized by the complete absence of hind limbs, the absence or considerable reduction of the left lung, and the lack of teeth on the premaxilla and usually having a loose facial structure, relatively few head scales, and ventral scales as wide as the body.
All three Gerald Ford, Jimmy Carter and George Bush senior faced determined primary opponents, whereas disgruntlement with Mr Obama on the left, though considerable, does not appear severe enough to spawn a vexing challenger.
But what is wrong with Italian politics is perhaps more serious: it allows people like Mr Berlusconi on the right and Fausto Bertinotti on the left to wield considerable power.
In the nascent field of so-called "distance education", universities have a considerable advantage, but the international left has to catch up.
For a while Sieff also took up street photography, and with considerable prescience, shot the the Left Bank in the last age of existentialism; the Deux Magots cafe, the bookshops and the jazz clubs of the grands boulevards - his black-and-white images caught the period, and were later recycled in advertising.
