Most Democrats did not announce until late 1991.
Eleven Democrats have announced their support for the nominee.
All 55 Republicans and 11 Democrats have announced their support for the Republican measure.
Only five Democrats have announced plans to leave.
So far this year 21 Democrats have announced their retirements and 8 are seeking other offices.
Of the 33 senators up for re-election, 5 Republicans and 8 Democrats have announced their retirement.
No other Democrat has announced for the seat.
She was the only Democrat to file for the seat, although other Democrats had announced an interest as of late 2005.
Democrats announced that the patients' rights bill would be the first order of business after they took control of the Senate this month.
The Democrats, in contrast, announce policy but fail to woo hearts, she said.