Isan returns 136 of the national parliament's 400 constituency MPs. Preliminary results from the 2005 election indicated that the Thai Rak Thai party had taken 126 of these seats, with six for Chart Thai and two each for the Democrat party and Mahachon[1].
Isan is divided into 19 provinces, although the south-western province of Nakhon Ratchasima is considered by some to be more closely connected with Central Thailand.
The eastern region is sometimes listed as a separate region destinct from central Thailand - sometimes only the four coastal provinces, sometimes the above list excluding Nakhon Nayok. None of these regions are actually administrative subdivision, they are only geographical or statistical groupings.
