WASHINGTON (REUTERS) - Republicans in the Senate are expected to block on Saturday a Bill by President Barack Obama's Democrats to increase the US debt limit through next year, a senior congressional aide said.

The aide said Democrats were prepared to try to build up support and bring up the Bill again in the coming days. The Bill was expected to be blocked on Saturday by a Republican procedural hurdle that takes 60 votes to clear in the 100-member chamber. Democrats control the Senate, 54-46.