Mezue ahịrịokwu na-esonụ: Na February 3, 2008, Shriver kwadoro Senator Barack Obama maka nhọpụta onyeisiala Democratic nke 2008. E nyere nkwado ahụ na nnọkọ UCLA nke gosipụtara Caroline Kennedy (nwa nwanne Shriver), Oprah Winfrey, Stevie Wonder, na nwunye Obama bụ Michelle Obama. Gọvanọ Schwarzenegger kwadoro Senator John McCain maka nhọpụta onyeisiala Republican ụbọchị ole na ole tupu mgbe ahụ na Jenụwarị 31, 2008. N'afọ ahụ, dịka n'afọ 2004, Shriver nọ na-aga na
na Democratic National Convention mgbe nwanne nna ya Ted Kennedy kwuru okwu.