Gloria Macapagal Arroyo is not in jail. She is presently under hospital arrest for cases that have been brought to court in the past years, but none of them seem to convict the former president of any corruption charges. She has insisted in the past that she is suffering from a terminal illness, but as you can see she is still alive until now. Under the law, until she is convicted of any crime, she can still run for any position she likes. As in her case, as representative of Pampanga. The only case I remember she was charge with is the Sweepstakes funds that she diverted to some NGO and to some of her political party, but the court find that charge insufficient in substance. There are of course, some cases still pending in court like the ZTE and the fertilizer funds. The court is too slow in finding her guilty.