Registered Voters for the May 2019 Elections.

COMELEC data shows that there are 61,843,750 registered voters in the Philippines alone.1,822,173 more are registered to vote from overseas

REGION	PERCENTAGE	REGISTERED VOTERS	RANK
Region IV-A 14.03%	0.1403	8,676,678	1
NCR 11.43%	0.1143	7,068,741	2
Region III 11.04%	0.1104	6,827,550	3
Region VII 8.00%	0.08	4,947,500	4
Region VI 7.78%	0.0778	4,811,444	5
Region V 5.90%	0.059	3,648,781	6
Region I 5.39%	0.0539	3,333,378	7
Region VIII 4.93%	0.0493	3,048,897	8
Region XI 4.89%	0.0489	3,024,159	9
Region X 4.62%	0.0462	2,857,181	10
Region XII 3.93%	0.0393	2,430,459	11
Region II 3.55%	0.0355	2,195,453	12.5
Region IX 3.55%	0.0355	2,195,453	12.5
ARMM 3.51%	0.0351	2,170,716	14
Region IV-B 2.96%	0.0296	1,830,575	15
CARAGA 2.85%	0.0285	1,762,547	16
CAR 1.64% -	0.0164	1,014,238	17
TOTAL REGISTERED VOTERS IN THE PHILIPPINES=		61,843,750

Reference: https://www.rappler.com/newsbreak/iq/226121-number-registered-voters-elections-2019